2172692131900 has 36 divisors (see below), whose sum is σ = 4919730710832. Its totient is φ = 831290901760.

The previous prime is 2172692131867. The next prime is 2172692131903. The reversal of 2172692131900 is 91312962712.

It is a super-2 number, since 2×2172692131900² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172692131903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472322077 + ... + 472326676.

It is an arithmetic number, because the mean of its divisors is an integer number (136659186412).

Almost surely, 2^{2172692131900} is an apocalyptic number.

2172692131900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172692131900 is an abundant number, since it is smaller than the sum of its proper divisors (2747038578932).

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

2172692131900 is a wasteful number, since it uses less digits than its factorization.

2172692131900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944648790 (or 944648783 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 2172692131900 in words is "two trillion, one hundred seventy-two billion, six hundred ninety-two million, one hundred thirty-one thousand, nine hundred".