13209673656 has 32 divisors (see below), whose sum is σ = 33027845760. Its totient is φ = 4402736352.

The previous prime is 13209673649. The next prime is 13209673667. The reversal of 13209673656 is 65637690231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239061 + ... + 289083.

It is an arithmetic number, because the mean of its divisors is an integer number (1032120180).

Almost surely, 2^13209673656 is an apocalyptic number.

It is an amenable number.

13209673656 is an abundant number, since it is smaller than the sum of its proper divisors (19818172104).

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

13209673656 is a wasteful number, since it uses less digits than its factorization.

13209673656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61035 (or 61031 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 13209673656 in words is "thirteen billion, two hundred nine million, six hundred seventy-three thousand, six hundred fifty-six".