20117510605516 has 12 divisors (see below), whose sum is σ = 35701497694800. Its totient is φ = 9917082692720.

The previous prime is 20117510605501. The next prime is 20117510605547. The reversal of 20117510605516 is 61550601571102.

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, 35418152191 + ... + 35418152758.

It is an arithmetic number, because the mean of its divisors is an integer number (2975124807900).

Almost surely, 2^{20117510605516} is an apocalyptic number.

It is an amenable number.

20117510605516 is a deficient number, since it is larger than the sum of its proper divisors (15583987089284).

20117510605516 is a wasteful number, since it uses less digits than its factorization.

20117510605516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70836305024 (or 70836305022 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 40.

The spelling of 20117510605516 in words is "twenty trillion, one hundred seventeen billion, five hundred ten million, six hundred five thousand, five hundred sixteen".