13065155220656 has 40 divisors (see below), whose sum is σ = 31559985341184. Its totient is φ = 5090320215360.

The previous prime is 13065155220631. The next prime is 13065155220743. The reversal of 13065155220656 is 65602255156031.

It is a self number, because there is not a number n which added to its sum of digits gives 13065155220656.

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, 5302415660 + ... + 5302418123.

Almost surely, 2^{13065155220656} is an apocalyptic number.

13065155220656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13065155220656 is an abundant number, since it is smaller than the sum of its proper divisors (18494830120528).

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

13065155220656 is a wasteful number, since it uses less digits than its factorization.

13065155220656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604833809 (or 10604833803 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 13065155220656 in words is "thirteen trillion, sixty-five billion, one hundred fifty-five million, two hundred twenty thousand, six hundred fifty-six".