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68694169368 = 233112231028479
BaseRepresentation
bin111111111110011111…
…011101011100011000
320120022102012101000010
4333332133131130120
52111141201404433
651320242241520
74651206543156
oct777637353430
9216272171003
1068694169368
1127151082200
12113916562a0
136629a4a7c6
1434794183d6
151bc0b6ce63
hexffe7dd718

68694169368 has 96 divisors (see below), whose sum is σ = 196974489600. Its totient is φ = 19911334080.

The previous prime is 68694169363. The next prime is 68694169393. The reversal of 68694169368 is 86396149686.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 68694169299 and 68694169308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68694169363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447448 + ... + 581031.

It is an arithmetic number, because the mean of its divisors is an integer number (2051817600).

Almost surely, 268694169368 is an apocalyptic number.

It is an amenable number.

68694169368 is an abundant number, since it is smaller than the sum of its proper divisors (128280320232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68694169368 is a wasteful number, since it uses less digits than its factorization.

68694169368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028533 (or 1028518 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 66.

The spelling of 68694169368 in words is "sixty-eight billion, six hundred ninety-four million, one hundred sixty-nine thousand, three hundred sixty-eight".

Divisors: 1 2 3 4 6 8 11 12 22 23 24 33 44 46 66 69 88 92 121 132 138 184 242 253 264 276 363 484 506 552 726 759 968 1012 1452 1518 2024 2783 2904 3036 5566 6072 8349 11132 16698 22264 33396 66792 1028479 2056958 3085437 4113916 6170874 8227832 11313269 12341748 22626538 23655017 24683496 33939807 45253076 47310034 67879614 70965051 90506152 94620068 124445959 135759228 141930102 189240136 248891918 260205187 271518456 283860204 373337877 497783836 520410374 567720408 746675754 780615561 995567672 1040820748 1493351508 1561231122 2081641496 2862257057 2986703016 3122462244 5724514114 6244924488 8586771171 11449028228 17173542342 22898056456 34347084684 68694169368