20117514777564 has 24 divisors (see below), whose sum is σ = 46941178000528. Its totient is φ = 6705793946880.

The previous prime is 20117514777527. The next prime is 20117514777589. The reversal of 20117514777564 is 46577741571102.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 3620827 + ... + 7303794.

Almost surely, 2^{20117514777564} is an apocalyptic number.

It is an amenable number.

20117514777564 is an abundant number, since it is smaller than the sum of its proper divisors (26823663222964).

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

20117514777564 is a wasteful number, since it uses less digits than its factorization.

20117514777564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11078085 (or 11078083 counting only the distinct ones).

The product of its (nonzero) digits is 11524800, while the sum is 57.

The spelling of 20117514777564 in words is "twenty trillion, one hundred seventeen billion, five hundred fourteen million, seven hundred seventy-seven thousand, five hundred sixty-four".