86438740564 has 24 divisors (see below), whose sum is σ = 165175034976. Its totient is φ = 39253284000.

The previous prime is 86438740561. The next prime is 86438740573. The reversal of 86438740564 is 46504783468.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86438740561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879102 + ... + 972469.

It is an arithmetic number, because the mean of its divisors is an integer number (6882293124).

Almost surely, 2^86438740564 is an apocalyptic number.

It is an amenable number.

86438740564 is a deficient number, since it is larger than the sum of its proper divisors (78736294412).

86438740564 is a wasteful number, since it uses less digits than its factorization.

86438740564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852647 (or 1852645 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 55.

The spelling of 86438740564 in words is "eighty-six billion, four hundred thirty-eight million, seven hundred forty thousand, five hundred sixty-four".