11620656868 has 12 divisors (see below), whose sum is σ = 20336904252. Its totient is φ = 5810112800.

The previous prime is 11620656857. The next prime is 11620656877. The reversal of 11620656868 is 86865602611.

It can be written as a sum of positive squares in 2 ways, for example, as 9202181184 + 2418475684 = 95928^2 + 49178^2 .

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, 184146 + ... + 239062.

It is an arithmetic number, because the mean of its divisors is an integer number (1694742021).

Almost surely, 2^11620656868 is an apocalyptic number.

It is an amenable number.

11620656868 is a deficient number, since it is larger than the sum of its proper divisors (8716247384).

11620656868 is a wasteful number, since it uses less digits than its factorization.

11620656868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107822 (or 107820 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 11620656868 in words is "eleven billion, six hundred twenty million, six hundred fifty-six thousand, eight hundred sixty-eight".