11656610055 has 48 divisors (see below), whose sum is σ = 21001125600. Its totient is φ = 5975887104.

The previous prime is 11656610051. The next prime is 11656610089. The reversal of 11656610055 is 55001665611.

It is not a de Polignac number, because 11656610055 - 2² = 11656610051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11656610051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96021 + ... + 180369.

It is an arithmetic number, because the mean of its divisors is an integer number (437523450).

Almost surely, 2^11656610055 is an apocalyptic number.

11656610055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11656610055 is a deficient number, since it is larger than the sum of its proper divisors (9344515545).

11656610055 is a wasteful number, since it uses less digits than its factorization.

11656610055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84480 (or 84477 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

It can be divided in two parts, 116566 and 10055, that added together give a palindrome (126621).

The spelling of 11656610055 in words is "eleven billion, six hundred fifty-six million, six hundred ten thousand, fifty-five".