86256387513 has 20 divisors (see below), whose sum is σ = 128864134608. Its totient is φ = 57498903000.

The previous prime is 86256387509. The next prime is 86256387557. The reversal of 86256387513 is 31578365268.

86256387513 is a `hidden beast` number, since 8 + 6 + 2 + 563 + 8 + 75 + 1 + 3 = 666.

It is not a de Polignac number, because 86256387513 - 2² = 86256387509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86256387513.

It is not an unprimeable number, because it can be changed into a prime (86256387313) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 948870 + ... + 1035792.

Almost surely, 2^86256387513 is an apocalyptic number.

It is an amenable number.

86256387513 is a deficient number, since it is larger than the sum of its proper divisors (42607747095).

86256387513 is a wasteful number, since it uses less digits than its factorization.

86256387513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99186 (or 99177 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 86256387513 in words is "eighty-six billion, two hundred fifty-six million, three hundred eighty-seven thousand, five hundred thirteen".