136621604455 has 32 divisors (see below), whose sum is σ = 193448263680. Its totient is φ = 90678631680.

The previous prime is 136621604447. The next prime is 136621604477. The reversal of 136621604455 is 554406126631.

It is not a de Polignac number, because 136621604455 - 2³ = 136621604447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192585 + ... + 557074.

It is an arithmetic number, because the mean of its divisors is an integer number (6045258240).

Almost surely, 2^136621604455 is an apocalyptic number.

136621604455 is a deficient number, since it is larger than the sum of its proper divisors (56826659225).

136621604455 is a wasteful number, since it uses less digits than its factorization.

136621604455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749839.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 136621604455 in words is "one hundred thirty-six billion, six hundred twenty-one million, six hundred four thousand, four hundred fifty-five".