11639808257 has 16 divisors (see below), whose sum is σ = 14533281792. Its totient is φ = 9056659920.

The previous prime is 11639808239. The next prime is 11639808263. The reversal of 11639808257 is 75280893611.

It is not a de Polignac number, because 11639808257 - 2¹² = 11639804161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11639808277) 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, 58073 + ... + 163254.

It is an arithmetic number, because the mean of its divisors is an integer number (908330112).

Almost surely, 2^11639808257 is an apocalyptic number.

It is an amenable number.

11639808257 is a deficient number, since it is larger than the sum of its proper divisors (2893473535).

11639808257 is a wasteful number, since it uses less digits than its factorization.

11639808257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222028.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 11639808257 in words is "eleven billion, six hundred thirty-nine million, eight hundred eight thousand, two hundred fifty-seven".