79956107640 has 256 divisors, whose sum is σ = 279123408000. Its totient is φ = 20585746944.

The previous prime is 79956107639. The next prime is 79956107659. The reversal of 79956107640 is 4670165997.

79956107640 is a `hidden beast` number, since 7 + 9 + 9 + 561 + 0 + 76 + 4 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2521162 + ... + 2552678.

Almost surely, 2^79956107640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79956107640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139561704000).

79956107640 is an abundant number, since it is smaller than the sum of its proper divisors (199167300360).

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

79956107640 is a wasteful number, since it uses less digits than its factorization.

79956107640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31578 (or 31556 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 79956107640 in words is "seventy-nine billion, nine hundred fifty-six million, one hundred seven thousand, six hundred forty".