664130011565 has 32 divisors (see below), whose sum is σ = 859501238400. Its totient is φ = 490984519680.

The previous prime is 664130011541. The next prime is 664130011619. The reversal of 664130011565 is 565110031466.

664130011565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-664130011565 is a prime.

It is a super-2 number, since 2×664130011565² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 36303941 + ... + 36322229.

It is an arithmetic number, because the mean of its divisors is an integer number (26859413700).

Almost surely, 2^664130011565 is an apocalyptic number.

It is an amenable number.

664130011565 is a deficient number, since it is larger than the sum of its proper divisors (195371226835).

664130011565 is a wasteful number, since it uses less digits than its factorization.

664130011565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27677.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 664130011565 in words is "six hundred sixty-four billion, one hundred thirty million, eleven thousand, five hundred sixty-five".