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68088463272 = 2334105074789
BaseRepresentation
bin111111011010011000…
…110111111110101000
320111202012110022110000
4333122120313332220
52103421121311042
651140204023000
74630203250164
oct773230677650
9214665408400
1068088463272
1126970187255
1211242831a60
13656140492b
14341cbc7ca4
151b878c474c
hexfda637fa8

68088463272 has 40 divisors (see below), whose sum is σ = 190710743850. Its totient is φ = 22696154208.

The previous prime is 68088463253. The next prime is 68088463279. The reversal of 68088463272 is 27236488086.

68088463272 is a `hidden beast` number, since 6 + 80 + 88 + 463 + 27 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57200375556 + 10888087716 = 239166^2 + 104346^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (68088463279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52536747 + ... + 52538042.

Almost surely, 268088463272 is an apocalyptic number.

It is an amenable number.

68088463272 is an abundant number, since it is smaller than the sum of its proper divisors (122622280578).

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

68088463272 is a wasteful number, since it uses less digits than its factorization.

68088463272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105074807 (or 105074794 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 68088463272 in words is "sixty-eight billion, eighty-eight million, four hundred sixty-three thousand, two hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 324 648 105074789 210149578 315224367 420299156 630448734 840598312 945673101 1260897468 1891346202 2521794936 2837019303 3782692404 5674038606 7565384808 8511057909 11348077212 17022115818 22696154424 34044231636 68088463272