86315708787 has 64 divisors (see below), whose sum is σ = 148376530944. Its totient is φ = 43336275840.

The previous prime is 86315708783. The next prime is 86315708797. The reversal of 86315708787 is 78780751368.

It is not a de Polignac number, because 86315708787 - 2² = 86315708783 is a prime.

It is a super-2 number, since 2×86315708787² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86315708787.

It is not an unprimeable number, because it can be changed into a prime (86315708783) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 767668 + ... + 872894.

It is an arithmetic number, because the mean of its divisors is an integer number (2318383296).

Almost surely, 2^86315708787 is an apocalyptic number.

86315708787 is a deficient number, since it is larger than the sum of its proper divisors (62060822157).

86315708787 is a wasteful number, since it uses less digits than its factorization.

86315708787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105368.

The product of its (nonzero) digits is 15805440, while the sum is 60.

The spelling of 86315708787 in words is "eighty-six billion, three hundred fifteen million, seven hundred eight thousand, seven hundred eighty-seven".