79726477056 has 432 divisors, whose sum is σ = 238805540064. Its totient is φ = 23521132544.

The previous prime is 79726477043. The next prime is 79726477097. The reversal of 79726477056 is 65077462797.

It is a super-2 number, since 2×79726477056² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 581945020 + ... + 581945156.

It is an arithmetic number, because the mean of its divisors is an integer number (552790602).

Almost surely, 2^79726477056 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 79726477056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119402770032).

79726477056 is an abundant number, since it is smaller than the sum of its proper divisors (159079063008).

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

79726477056 is a wasteful number, since it uses less digits than its factorization.

79726477056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 31116960, while the sum is 60.

The spelling of 79726477056 in words is "seventy-nine billion, seven hundred twenty-six million, four hundred seventy-seven thousand, fifty-six".