122603644656 has 80 divisors (see below), whose sum is σ = 353378409120. Its totient is φ = 40698270720.

The previous prime is 122603644633. The next prime is 122603644661. The reversal of 122603644656 is 656446306221.

It is a happy number.

122603644656 is a `hidden beast` number, since 1 + 226 + 0 + 364 + 4 + 65 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484695 + ... + 692918.

It is an arithmetic number, because the mean of its divisors is an integer number (4417230114).

Almost surely, 2^122603644656 is an apocalyptic number.

122603644656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122603644656 is an abundant number, since it is smaller than the sum of its proper divisors (230774764464).

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

122603644656 is a wasteful number, since it uses less digits than its factorization.

122603644656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177871 (or 1177859 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 122603644656 in words is "one hundred twenty-two billion, six hundred three million, six hundred forty-four thousand, six hundred fifty-six".