16564962265 has 16 divisors (see below), whose sum is σ = 21056610960. Its totient is φ = 12466892800.

The previous prime is 16564962263. The next prime is 16564962269. The reversal of 16564962265 is 56226946561.

It can be written as a sum of positive squares in 8 ways, for example, as 23658496 + 16541303769 = 4864^2 + 128613^2 .

It is not a de Polignac number, because 16564962265 - 2¹ = 16564962263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16564962263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154065 + ... + 238465.

It is an arithmetic number, because the mean of its divisors is an integer number (1316038185).

Almost surely, 2^16564962265 is an apocalyptic number.

It is an amenable number.

16564962265 is a deficient number, since it is larger than the sum of its proper divisors (4491648695).

16564962265 is a wasteful number, since it uses less digits than its factorization.

16564962265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86732.

The product of its digits is 4665600, while the sum is 52.

The spelling of 16564962265 in words is "sixteen billion, five hundred sixty-four million, nine hundred sixty-two thousand, two hundred sixty-five".