664802027155 has 32 divisors (see below), whose sum is σ = 913895792640. Its totient is φ = 454781226240.

The previous prime is 664802027147. The next prime is 664802027207. The reversal of 664802027155 is 551720208466.

664802027155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664802027155 - 2³ = 664802027147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93249631 + ... + 93256759.

It is an arithmetic number, because the mean of its divisors is an integer number (28559243520).

Almost surely, 2^664802027155 is an apocalyptic number.

664802027155 is a deficient number, since it is larger than the sum of its proper divisors (249093765485).

664802027155 is a wasteful number, since it uses less digits than its factorization.

664802027155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13099.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 664802027155 in words is "six hundred sixty-four billion, eight hundred two million, twenty-seven thousand, one hundred fifty-five".