100555523980520 has 128 divisors (see below), whose sum is σ = 262198603895040. Its totient is φ = 33992852428800.

The previous prime is 100555523980501. The next prime is 100555523980559. The reversal of 100555523980520 is 25089325555001.

It is a super-2 number, since 2×100555523980520² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62218670 + ... + 63814370.

It is an arithmetic number, because the mean of its divisors is an integer number (2048426592930).

Almost surely, 2^{100555523980520} is an apocalyptic number.

100555523980520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100555523980520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131099301947520).

100555523980520 is an abundant number, since it is smaller than the sum of its proper divisors (161643079914520).

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

100555523980520 is a wasteful number, since it uses less digits than its factorization.

100555523980520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598875 (or 1598871 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 50.

The spelling of 100555523980520 in words is "one hundred trillion, five hundred fifty-five billion, five hundred twenty-three million, nine hundred eighty thousand, five hundred twenty".