13396666815 has 32 divisors (see below), whose sum is σ = 27218626560. Its totient is φ = 6124190112.

The previous prime is 13396666769. The next prime is 13396666831. The reversal of 13396666815 is 51866669331.

It is not a de Polignac number, because 13396666815 - 2¹¹ = 13396664767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7087239 + ... + 7089128.

It is an arithmetic number, because the mean of its divisors is an integer number (850582080).

Almost surely, 2^13396666815 is an apocalyptic number.

13396666815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13396666815 is an abundant number, since it is smaller than the sum of its proper divisors (13821959745).

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

13396666815 is a wasteful number, since it uses less digits than its factorization.

13396666815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14176388 (or 14176382 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 13396666815 in words is "thirteen billion, three hundred ninety-six million, six hundred sixty-six thousand, eight hundred fifteen".