64156115265 has 64 divisors (see below), whose sum is σ = 112721760000. Its totient is φ = 30900879360.

The previous prime is 64156115249. The next prime is 64156115297. The reversal of 64156115265 is 56251165146.

It is not a de Polignac number, because 64156115265 - 2⁴ = 64156115249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39773599 + ... + 39775211.

It is an arithmetic number, because the mean of its divisors is an integer number (1761277500).

Almost surely, 2^64156115265 is an apocalyptic number.

It is an amenable number.

64156115265 is a deficient number, since it is larger than the sum of its proper divisors (48565644735).

64156115265 is a wasteful number, since it uses less digits than its factorization.

64156115265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074.

The product of its digits is 216000, while the sum is 42.

The spelling of 64156115265 in words is "sixty-four billion, one hundred fifty-six million, one hundred fifteen thousand, two hundred sixty-five".