86977854438 has 32 divisors (see below), whose sum is σ = 175574241792. Its totient is φ = 28723094400.

The previous prime is 86977854437. The next prime is 86977854449. The reversal of 86977854438 is 83445877968.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86977854433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1539103 + ... + 1594613.

It is an arithmetic number, because the mean of its divisors is an integer number (5486695056).

Almost surely, 2^86977854438 is an apocalyptic number.

86977854438 is an abundant number, since it is smaller than the sum of its proper divisors (88596387354).

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

86977854438 is a wasteful number, since it uses less digits than its factorization.

86977854438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57940.

The product of its digits is 325140480, while the sum is 69.

The spelling of 86977854438 in words is "eighty-six billion, nine hundred seventy-seven million, eight hundred fifty-four thousand, four hundred thirty-eight".