20116755475504 has 80 divisors (see below), whose sum is σ = 40528514897920. Its totient is φ = 9662561280000.

The previous prime is 20116755475501. The next prime is 20116755475513. The reversal of 20116755475504 is 40557455761102.

It is a super-2 number, since 2×20116755475504² (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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661916149 + ... + 661946539.

It is an arithmetic number, because the mean of its divisors is an integer number (506606436224).

Almost surely, 2^{20116755475504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20116755475504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20264257448960).

20116755475504 is an abundant number, since it is smaller than the sum of its proper divisors (20411759422416).

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

20116755475504 is a wasteful number, since it uses less digits than its factorization.

20116755475504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40170 (or 40164 counting only the distinct ones).

The product of its (nonzero) digits is 5880000, while the sum is 52.

The spelling of 20116755475504 in words is "twenty trillion, one hundred sixteen billion, seven hundred fifty-five million, four hundred seventy-five thousand, five hundred four".