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69819197064 = 23317171125483
BaseRepresentation
bin100000100000110001…
…1000110011010001000
320200012211010200212120
41001001203012122020
52120442203301224
652024031411240
75021120245251
oct1010143063210
9220184120776
1069819197064
1127679131161
1211646383b20
136778b52176
1435449cdb28
151c397e9779
hex10418c6688

69819197064 has 32 divisors (see below), whose sum is σ = 184815522720. Its totient is φ = 21904061696.

The previous prime is 69819197027. The next prime is 69819197117. The reversal of 69819197064 is 46079191896.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 69819196989 and 69819197007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85562334 + ... + 85563149.

It is an arithmetic number, because the mean of its divisors is an integer number (5775485085).

Almost surely, 269819197064 is an apocalyptic number.

It is an amenable number.

69819197064 is an abundant number, since it is smaller than the sum of its proper divisors (114996325656).

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

69819197064 is a wasteful number, since it uses less digits than its factorization.

69819197064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171125509 (or 171125505 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 60.

The spelling of 69819197064 in words is "sixty-nine billion, eight hundred nineteen million, one hundred ninety-seven thousand, sixty-four".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 171125483 342250966 513376449 684501932 1026752898 1369003864 2053505796 2909133211 4107011592 5818266422 8727399633 11636532844 17454799266 23273065688 34909598532 69819197064