20117511366756 has 48 divisors (see below), whose sum is σ = 49411831358400. Its totient is φ = 6352846906752.

The previous prime is 20117511366713. The next prime is 20117511366767. The reversal of 20117511366756 is 65766311571102.

It is a junction number, because it is equal to n+sod(n) for n = 20117511366699 and 20117511366708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35953626 + ... + 36508878.

It is an arithmetic number, because the mean of its divisors is an integer number (1029413153300).

Almost surely, 2^{20117511366756} is an apocalyptic number.

It is an amenable number.

20117511366756 is an abundant number, since it is smaller than the sum of its proper divisors (29294319991644).

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

20117511366756 is a wasteful number, since it uses less digits than its factorization.

20117511366756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714188 (or 714186 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 51.

The spelling of 20117511366756 in words is "twenty trillion, one hundred seventeen billion, five hundred eleven million, three hundred sixty-six thousand, seven hundred fifty-six".