11656715355 has 24 divisors (see below), whose sum is σ = 20393813232. Its totient is φ = 6158810304.

The previous prime is 11656715321. The next prime is 11656715359. The reversal of 11656715355 is 55351765611.

It is not a de Polignac number, because 11656715355 - 2¹⁶ = 11656649819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11656715355.

It is not an unprimeable number, because it can be changed into a prime (11656715359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1205644 + ... + 1215273.

It is an arithmetic number, because the mean of its divisors is an integer number (849742218).

Almost surely, 2^11656715355 is an apocalyptic number.

11656715355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11656715355 is a deficient number, since it is larger than the sum of its proper divisors (8737097877).

11656715355 is a wasteful number, since it uses less digits than its factorization.

11656715355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421035 (or 2421032 counting only the distinct ones).

The product of its digits is 472500, while the sum is 45.

The spelling of 11656715355 in words is "eleven billion, six hundred fifty-six million, seven hundred fifteen thousand, three hundred fifty-five".