86365656643 has 4 divisors (see below), whose sum is σ = 98703607600. Its totient is φ = 74027705688.

The previous prime is 86365656607. The next prime is 86365656653. The reversal of 86365656643 is 34665656368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86365656643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86365656653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6168975468 + ... + 6168975481.

It is an arithmetic number, because the mean of its divisors is an integer number (24675901900).

Almost surely, 2^86365656643 is an apocalyptic number.

86365656643 is a deficient number, since it is larger than the sum of its proper divisors (12337950957).

86365656643 is a wasteful number, since it uses less digits than its factorization.

86365656643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12337950956.

The product of its digits is 55987200, while the sum is 58.

The spelling of 86365656643 in words is "eighty-six billion, three hundred sixty-five million, six hundred fifty-six thousand, six hundred forty-three".