855164102564 has 12 divisors (see below), whose sum is σ = 1496590658304. Its totient is φ = 427566771624.

The previous prime is 855164102539. The next prime is 855164102587. The reversal of 855164102564 is 465201461558.

It is a super-2 number, since 2×855164102564² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3693524 + ... + 3918219.

It is an arithmetic number, because the mean of its divisors is an integer number (124715888192).

Almost surely, 2^855164102564 is an apocalyptic number.

It is an amenable number.

855164102564 is a deficient number, since it is larger than the sum of its proper divisors (641426555740).

855164102564 is a wasteful number, since it uses less digits than its factorization.

855164102564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639834 (or 7639832 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 47.

The spelling of 855164102564 in words is "eight hundred fifty-five billion, one hundred sixty-four million, one hundred two thousand, five hundred sixty-four".