20117505555232 has 24 divisors (see below), whose sum is σ = 39615154466076. Its totient is φ = 10056513944832.

The previous prime is 20117505555221. The next prime is 20117505555349. The reversal of 20117505555232 is 23255550571102.

It can be written as a sum of positive squares in 2 ways, for example, as 15457761636496 + 4659743918736 = 3931636^2 + 2158644^2 .

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, 69817503 + ... + 70105054.

Almost surely, 2^{20117505555232} is an apocalyptic number.

It is an amenable number.

20117505555232 is a deficient number, since it is larger than the sum of its proper divisors (19497648910844).

20117505555232 is a wasteful number, since it uses less digits than its factorization.

20117505555232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139927060 (or 139927052 counting only the distinct ones).

The product of its (nonzero) digits is 525000, while the sum is 43.

The spelling of 20117505555232 in words is "twenty trillion, one hundred seventeen billion, five hundred five million, five hundred fifty-five thousand, two hundred thirty-two".