879987789978 has 64 divisors (see below), whose sum is σ = 1933440969600. Its totient is φ = 264793548800.

The previous prime is 879987789977. The next prime is 879987789983.

879987789978 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (879987789977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38154226 + ... + 38177282.

It is an arithmetic number, because the mean of its divisors is an integer number (30210015150).

Almost surely, 2^879987789978 is an apocalyptic number.

879987789978 is an abundant number, since it is smaller than the sum of its proper divisors (1053453179622).

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

879987789978 is a wasteful number, since it uses less digits than its factorization.

879987789978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27103.

The product of its digits is 64524128256, while the sum is 96.

The spelling of 879987789978 in words is "eight hundred seventy-nine billion, nine hundred eighty-seven million, seven hundred eighty-nine thousand, nine hundred seventy-eight".