879188881978 has 48 divisors (see below), whose sum is σ = 1458419245920. Its totient is φ = 397194732000.

The previous prime is 879188881943. The next prime is 879188881993.

879188881978 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×879188881978² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93337353 + ... + 93346771.

It is an arithmetic number, because the mean of its divisors is an integer number (30383734290).

Almost surely, 2^879188881978 is an apocalyptic number.

879188881978 is a deficient number, since it is larger than the sum of its proper divisors (579230363942).

879188881978 is a wasteful number, since it uses less digits than its factorization.

879188881978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11755 (or 11744 counting only the distinct ones).

The product of its digits is 1040449536, while the sum is 82.

The spelling of 879188881978 in words is "eight hundred seventy-nine billion, one hundred eighty-eight million, eight hundred eighty-one thousand, nine hundred seventy-eight".