11657631455 has 8 divisors (see below), whose sum is σ = 13998807504. Its totient is φ = 9319672000.

The previous prime is 11657631451. The next prime is 11657631457. The reversal of 11657631455 is 55413675611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11657631455 - 2² = 11657631451 is a prime.

It is a super-2 number, since 2×11657631455² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11657631451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796166 + ... + 810675.

It is an arithmetic number, because the mean of its divisors is an integer number (1749850938).

Almost surely, 2^11657631455 is an apocalyptic number.

11657631455 is a deficient number, since it is larger than the sum of its proper divisors (2341176049).

11657631455 is a wasteful number, since it uses less digits than its factorization.

11657631455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608297.

The product of its digits is 378000, while the sum is 44.

The spelling of 11657631455 in words is "eleven billion, six hundred fifty-seven million, six hundred thirty-one thousand, four hundred fifty-five".