79953128788 has 24 divisors (see below), whose sum is σ = 151461645608. Its totient is φ = 36710240256.

The previous prime is 79953128767. The next prime is 79953128819. The reversal of 79953128788 is 88782135997.

It can be written as a sum of positive squares in 4 ways, for example, as 4180656964 + 75772471824 = 64658^2 + 275268^2 .

It is a super-3 number, since 3×79953128788³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

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, 3973281 + ... + 3993352.

Almost surely, 2^79953128788 is an apocalyptic number.

It is an amenable number.

79953128788 is a deficient number, since it is larger than the sum of its proper divisors (71508516820).

79953128788 is a wasteful number, since it uses less digits than its factorization.

79953128788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966843 (or 7966841 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 67.

The spelling of 79953128788 in words is "seventy-nine billion, nine hundred fifty-three million, one hundred twenty-eight thousand, seven hundred eighty-eight".