79878888128 has 56 divisors (see below), whose sum is σ = 178124620128. Its totient is φ = 35264249856.

The previous prime is 79878888101. The next prime is 79878888143. The reversal of 79878888128 is 82188887897.

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, 2068001 + ... + 2106272.

It is an arithmetic number, because the mean of its divisors is an integer number (3180796788).

Almost surely, 2^79878888128 is an apocalyptic number.

It is an amenable number.

79878888128 is an abundant number, since it is smaller than the sum of its proper divisors (98245732000).

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

79878888128 is a wasteful number, since it uses less digits than its factorization.

79878888128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174321 (or 4174311 counting only the distinct ones).

The product of its digits is 231211008, while the sum is 74.

The spelling of 79878888128 in words is "seventy-nine billion, eight hundred seventy-eight million, eight hundred eighty-eight thousand, one hundred twenty-eight".