79349128756 has 6 divisors (see below), whose sum is σ = 138860975330. Its totient is φ = 39674564376.

The previous prime is 79349128751. The next prime is 79349128757. The reversal of 79349128756 is 65782194397.

It can be written as a sum of positive squares in only one way, i.e., 40374472356 + 38974656400 = 200934^2 + 197420^2 .

It is a super-2 number, since 2×79349128756² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79349128694 and 79349128703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79349128751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9918641091 + ... + 9918641098.

Almost surely, 2^79349128756 is an apocalyptic number.

It is an amenable number.

79349128756 is a deficient number, since it is larger than the sum of its proper divisors (59511846574).

79349128756 is a wasteful number, since it uses less digits than its factorization.

79349128756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19837282193 (or 19837282191 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 61.

The spelling of 79349128756 in words is "seventy-nine billion, three hundred forty-nine million, one hundred twenty-eight thousand, seven hundred fifty-six".