11553616657 has 32 divisors (see below), whose sum is σ = 13536129024. Its totient is φ = 9756489600.

The previous prime is 11553616643. The next prime is 11553616661. The reversal of 11553616657 is 75661635511.

It is not a de Polignac number, because 11553616657 - 2¹¹ = 11553614609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11553616057) 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, 1554013 + ... + 1561429.

It is an arithmetic number, because the mean of its divisors is an integer number (423004032).

Almost surely, 2^11553616657 is an apocalyptic number.

It is an amenable number.

11553616657 is a deficient number, since it is larger than the sum of its proper divisors (1982512367).

11553616657 is a wasteful number, since it uses less digits than its factorization.

11553616657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629.

The product of its digits is 567000, while the sum is 46.

The spelling of 11553616657 in words is "eleven billion, five hundred fifty-three million, six hundred sixteen thousand, six hundred fifty-seven".