100909100020 has 48 divisors (see below), whose sum is σ = 214657632000. Its totient is φ = 39840428160.

The previous prime is 100909100009. The next prime is 100909100027. The reversal of 100909100020 is 20001909001.

It is a junction number, because it is equal to n+sod(n) for n = 100909099964 and 100909100000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100909100027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6468630 + ... + 6484210.

It is an arithmetic number, because the mean of its divisors is an integer number (4472034000).

Almost surely, 2^100909100020 is an apocalyptic number.

100909100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100909100020 is an abundant number, since it is smaller than the sum of its proper divisors (113748531980).

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

100909100020 is a wasteful number, since it uses less digits than its factorization.

100909100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19768 (or 19766 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 100909100020 in words is "one hundred billion, nine hundred nine million, one hundred thousand, twenty".