13366506656 has 24 divisors (see below), whose sum is σ = 26927296704. Its totient is φ = 6527828160.

The previous prime is 13366506653. The next prime is 13366506691. The reversal of 13366506656 is 65660566331.

It is a self number, because there is not a number n which added to its sum of digits gives 13366506656.

It is not an unprimeable number, because it can be changed into a prime (13366506653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855640 + ... + 4858391.

It is an arithmetic number, because the mean of its divisors is an integer number (1121970696).

Almost surely, 2^13366506656 is an apocalyptic number.

13366506656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13366506656 is an abundant number, since it is smaller than the sum of its proper divisors (13560790048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13366506656 is an equidigital number, since it uses as much as digits as its factorization.

13366506656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9714084 (or 9714076 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 47.

The spelling of 13366506656 in words is "thirteen billion, three hundred sixty-six million, five hundred six thousand, six hundred fifty-six".