20544435008904 has 32 divisors (see below), whose sum is σ = 51369587154720. Its totient is φ = 6847011718656.

The previous prime is 20544435008837. The next prime is 20544435008927. The reversal of 20544435008904 is 40980053444502.

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, 70682217 + ... + 70972280.

It is an arithmetic number, because the mean of its divisors is an integer number (1605299598585).

Almost surely, 2^{20544435008904} is an apocalyptic number.

20544435008904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20544435008904 is an abundant number, since it is smaller than the sum of its proper divisors (30825152145816).

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

20544435008904 is a wasteful number, since it uses less digits than its factorization.

20544435008904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141660549 (or 141660545 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 20544435008904 in words is "twenty trillion, five hundred forty-four billion, four hundred thirty-five million, eight thousand, nine hundred four".