879906609978 has 32 divisors (see below), whose sum is σ = 1919952441792. Its totient is φ = 266616672000.

The previous prime is 879906609961. The next prime is 879906609991.

It is a happy number.

879906609978 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284428 + ... + 1356728.

It is an arithmetic number, because the mean of its divisors is an integer number (59998513806).

Almost surely, 2^879906609978 is an apocalyptic number.

879906609978 is an abundant number, since it is smaller than the sum of its proper divisors (1040045831814).

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

879906609978 is a wasteful number, since it uses less digits than its factorization.

879906609978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084750.

The product of its (nonzero) digits is 740710656, while the sum is 78.

The spelling of 879906609978 in words is "eight hundred seventy-nine billion, nine hundred six million, six hundred nine thousand, nine hundred seventy-eight".