79156879872 has 240 divisors, whose sum is σ = 248779916352. Its totient is φ = 22296207360.

The previous prime is 79156879831. The next prime is 79156879873. The reversal of 79156879872 is 27897865197.

It is a junction number, because it is equal to n+sod(n) for n = 79156879797 and 79156879806.

It is not an unprimeable number, because it can be changed into a prime (79156879873) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5336338 + ... + 5351150.

Almost surely, 2^79156879872 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 79156879872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124389958176).

79156879872 is an abundant number, since it is smaller than the sum of its proper divisors (169623036480).

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

79156879872 is a wasteful number, since it uses less digits than its factorization.

79156879872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14919 (or 14896 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 69.

The spelling of 79156879872 in words is "seventy-nine billion, one hundred fifty-six million, eight hundred seventy-nine thousand, eight hundred seventy-two".