16264988257 has 4 divisors (see below), whose sum is σ = 18588558016. Its totient is φ = 13941418500.

The previous prime is 16264988239. The next prime is 16264988261. The reversal of 16264988257 is 75288946261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16264988257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16264988287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161784869 + ... + 1161784882.

It is an arithmetic number, because the mean of its divisors is an integer number (4647139504).

Almost surely, 2^16264988257 is an apocalyptic number.

It is an amenable number.

16264988257 is a deficient number, since it is larger than the sum of its proper divisors (2323569759).

16264988257 is an equidigital number, since it uses as much as digits as its factorization.

16264988257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323569758.

The product of its digits is 11612160, while the sum is 58.

The spelling of 16264988257 in words is "sixteen billion, two hundred sixty-four million, nine hundred eighty-eight thousand, two hundred fifty-seven".