87958866885978 has 32 divisors (see below), whose sum is σ = 197097018678720. Its totient is φ = 25933818245760.

The previous prime is 87958866885917. The next prime is 87958866885983.

87958866885978 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18009593563 + ... + 18009598446.

It is an arithmetic number, because the mean of its divisors is an integer number (6159281833710).

Almost surely, 2^{87958866885978} is an apocalyptic number.

87958866885978 is an abundant number, since it is smaller than the sum of its proper divisors (109138151792742).

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

87958866885978 is a wasteful number, since it uses less digits than its factorization.

87958866885978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36019192062.

The product of its digits is 936404582400, while the sum is 102.

The spelling of 87958866885978 in words is "eighty-seven trillion, nine hundred fifty-eight billion, eight hundred sixty-six million, eight hundred eighty-five thousand, nine hundred seventy-eight".