16560016257 has 32 divisors (see below), whose sum is σ = 23500016640. Its totient is φ = 10343160000.

The previous prime is 16560016229. The next prime is 16560016273. The reversal of 16560016257 is 75261006561.

It is not a de Polignac number, because 16560016257 - 2⁸ = 16560016001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16560016157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9043332 + ... + 9045162.

It is an arithmetic number, because the mean of its divisors is an integer number (734375520).

Almost surely, 2^16560016257 is an apocalyptic number.

It is an amenable number.

16560016257 is a deficient number, since it is larger than the sum of its proper divisors (6940000383).

16560016257 is a wasteful number, since it uses less digits than its factorization.

16560016257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 16560016257 in words is "sixteen billion, five hundred sixty million, sixteen thousand, two hundred fifty-seven".