86565786513 has 16 divisors (see below), whose sum is σ = 128642656320. Its totient is φ = 51457061376.

The previous prime is 86565786511. The next prime is 86565786631. The reversal of 86565786513 is 31568756568.

It is not a de Polignac number, because 86565786513 - 2¹ = 86565786511 is a prime.

It is a super-2 number, since 2×86565786513² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86565786511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44666620 + ... + 44668557.

It is an arithmetic number, because the mean of its divisors is an integer number (8040166020).

Almost surely, 2^86565786513 is an apocalyptic number.

It is an amenable number.

86565786513 is a deficient number, since it is larger than the sum of its proper divisors (42076869807).

86565786513 is a wasteful number, since it uses less digits than its factorization.

86565786513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89335216.

The product of its digits is 36288000, while the sum is 60.

The spelling of 86565786513 in words is "eighty-six billion, five hundred sixty-five million, seven hundred eighty-six thousand, five hundred thirteen".