136621604454 has 16 divisors (see below), whose sum is σ = 273261285120. Its totient is φ = 45537522120.

The previous prime is 136621604447. The next prime is 136621604477. The reversal of 136621604454 is 454406126631.

It is a congruent number.

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, 653914 + ... + 837165.

It is an arithmetic number, because the mean of its divisors is an integer number (17078830320).

Almost surely, 2^136621604454 is an apocalyptic number.

136621604454 is an abundant number, since it is smaller than the sum of its proper divisors (136639680666).

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

136621604454 is a wasteful number, since it uses less digits than its factorization.

136621604454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506355.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 136621604454 in words is "one hundred thirty-six billion, six hundred twenty-one million, six hundred four thousand, four hundred fifty-four".