136621604456 has 32 divisors (see below), whose sum is σ = 277005018240. Its totient is φ = 62924590848.

The previous prime is 136621604447. The next prime is 136621604477. The reversal of 136621604456 is 654406126631.

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, 10680530 + ... + 10693313.

It is an arithmetic number, because the mean of its divisors is an integer number (8656406820).

Almost surely, 2^136621604456 is an apocalyptic number.

It is an amenable number.

136621604456 is an abundant number, since it is smaller than the sum of its proper divisors (140383413784).

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

136621604456 is a wasteful number, since it uses less digits than its factorization.

136621604456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21373913 (or 21373909 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 136621604456 in words is "one hundred thirty-six billion, six hundred twenty-one million, six hundred four thousand, four hundred fifty-six".