20116755475506 has 96 divisors (see below), whose sum is σ = 45916668383040. Its totient is φ = 6347629297152.

The previous prime is 20116755475501. The next prime is 20116755475513. The reversal of 20116755475506 is 60557455761102.

20116755475506 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 67 + 5 + 5 + 4 + 75 + 506 = 666.

It is a super-2 number, since 2×20116755475506² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20116755475501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3713631310 + ... + 3713636726.

It is an arithmetic number, because the mean of its divisors is an integer number (478298628990).

Almost surely, 2^{20116755475506} is an apocalyptic number.

20116755475506 is an abundant number, since it is smaller than the sum of its proper divisors (25799912907534).

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

20116755475506 is a wasteful number, since it uses less digits than its factorization.

20116755475506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12040 (or 12037 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 54.

The spelling of 20116755475506 in words is "twenty trillion, one hundred sixteen billion, seven hundred fifty-five million, four hundred seventy-five thousand, five hundred six".