26604536014640 has 20 divisors (see below), whose sum is σ = 61855546234224. Its totient is φ = 10641814405824.

The previous prime is 26604536014627. The next prime is 26604536014691. The reversal of 26604536014640 is 4641063540662.

It is a tau number, because it is divible by the number of its divisors (20).

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, 166278350012 + ... + 166278350171.

Almost surely, 2^{26604536014640} is an apocalyptic number.

26604536014640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26604536014640 is an abundant number, since it is smaller than the sum of its proper divisors (35251010219584).

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

26604536014640 is a wasteful number, since it uses less digits than its factorization.

26604536014640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332556700196 (or 332556700190 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 26604536014640 in words is "twenty-six trillion, six hundred four billion, five hundred thirty-six million, fourteen thousand, six hundred forty".