20688040531104 has 48 divisors (see below), whose sum is σ = 54348237135360. Its totient is φ = 6890663575040.

The previous prime is 20688040531091. The next prime is 20688040531141. The reversal of 20688040531104 is 40113504088602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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, 83468352 + ... + 83715839.

It is an arithmetic number, because the mean of its divisors is an integer number (1132254940320).

Almost surely, 2^{20688040531104} is an apocalyptic number.

20688040531104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20688040531104 is an abundant number, since it is smaller than the sum of its proper divisors (33660196604256).

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

20688040531104 is a wasteful number, since it uses less digits than its factorization.

20688040531104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167185493 (or 167185485 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 20688040531104 in words is "twenty trillion, six hundred eighty-eight billion, forty million, five hundred thirty-one thousand, one hundred four".