86646563018 has 16 divisors (see below), whose sum is σ = 139721224320. Its totient is φ = 40169850336.

The previous prime is 86646563011. The next prime is 86646563071. The reversal of 86646563018 is 81036564668.

It is not an unprimeable number, because it can be changed into a prime (86646563011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24255371 + ... + 24258942.

It is an arithmetic number, because the mean of its divisors is an integer number (8732576520).

Almost surely, 2^86646563018 is an apocalyptic number.

86646563018 is a deficient number, since it is larger than the sum of its proper divisors (53074661302).

86646563018 is a wasteful number, since it uses less digits than its factorization.

86646563018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48514381.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 86646563018 in words is "eighty-six billion, six hundred forty-six million, five hundred sixty-three thousand, eighteen".