13208177720964 has 12 divisors (see below), whose sum is σ = 30819081348944. Its totient is φ = 4402725906984.

The previous prime is 13208177720951. The next prime is 13208177720981. The reversal of 13208177720964 is 46902777180231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550340738362 + ... + 550340738385.

Almost surely, 2^{13208177720964} is an apocalyptic number.

It is an amenable number.

13208177720964 is an abundant number, since it is smaller than the sum of its proper divisors (17610903627980).

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

13208177720964 is a wasteful number, since it uses less digits than its factorization.

13208177720964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100681476754 (or 1100681476752 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 13208177720964 in words is "thirteen trillion, two hundred eight billion, one hundred seventy-seven million, seven hundred twenty thousand, nine hundred sixty-four".