20200009191900 has 108 divisors (see below), whose sum is σ = 60530213000712. Its totient is φ = 5200921841920.

The previous prime is 20200009191863. The next prime is 20200009191911. The reversal of 20200009191900 is 919190000202.

It is a super-2 number, since 2×20200009191900² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39779427 + ... + 40284026.

Almost surely, 2^{20200009191900} is an apocalyptic number.

20200009191900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200009191900 is an abundant number, since it is smaller than the sum of its proper divisors (40330203808812).

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

20200009191900 is a wasteful number, since it uses less digits than its factorization.

20200009191900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80063528 (or 80063492 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The spelling of 20200009191900 in words is "twenty trillion, two hundred billion, nine million, one hundred ninety-one thousand, nine hundred".