79720054610 has 24 divisors (see below), whose sum is σ = 166924033740. Its totient is φ = 27332589984.

The previous prime is 79720054591. The next prime is 79720054663. The reversal of 79720054610 is 1645002797.

It can be written as a sum of positive squares in 2 ways, for example, as 76494836929 + 3225217681 = 276577^2 + 56791^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 81346505 + ... + 81347484.

Almost surely, 2^79720054610 is an apocalyptic number.

79720054610 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79720054610 is an abundant number, since it is smaller than the sum of its proper divisors (87203979130).

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

79720054610 is a wasteful number, since it uses less digits than its factorization.

79720054610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162694010 (or 162694003 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 79720054610 in words is "seventy-nine billion, seven hundred twenty million, fifty-four thousand, six hundred ten".