79739857108 has 6 divisors (see below), whose sum is σ = 139544749946. Its totient is φ = 39869928552.

The previous prime is 79739857091. The next prime is 79739857117. The reversal of 79739857108 is 80175893797.

It can be written as a sum of positive squares in only one way, i.e., 43152583824 + 36587273284 = 207732^2 + 191278^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79739857108.

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 as a sum of consecutive naturals, namely, 9967482135 + ... + 9967482142.

Almost surely, 2^79739857108 is an apocalyptic number.

It is an amenable number.

79739857108 is a deficient number, since it is larger than the sum of its proper divisors (59804892838).

79739857108 is a wasteful number, since it uses less digits than its factorization.

79739857108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19934964281 (or 19934964279 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 64.

The spelling of 79739857108 in words is "seventy-nine billion, seven hundred thirty-nine million, eight hundred fifty-seven thousand, one hundred eight".