11816384257 has 16 divisors (see below), whose sum is σ = 12136303872. Its totient is φ = 11499528960.

The previous prime is 11816384197. The next prime is 11816384299. The reversal of 11816384257 is 75248361811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11816384257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11816384057) 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, 8555707 + ... + 8557087.

It is an arithmetic number, because the mean of its divisors is an integer number (758518992).

Almost surely, 2^11816384257 is an apocalyptic number.

It is an amenable number.

11816384257 is a deficient number, since it is larger than the sum of its proper divisors (319919615).

11816384257 is a wasteful number, since it uses less digits than its factorization.

11816384257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

The product of its digits is 322560, while the sum is 46.

The spelling of 11816384257 in words is "eleven billion, eight hundred sixteen million, three hundred eighty-four thousand, two hundred fifty-seven".