20371871900 has 18 divisors (see below), whose sum is σ = 44206962240. Its totient is φ = 8148748720.

The previous prime is 20371871887. The next prime is 20371871917. The reversal of 20371871900 is 917817302.

It is a super-2 number, since 2×20371871900² (a number of 21 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 5 ways as a sum of consecutive naturals, for example, 101859260 + ... + 101859459.

Almost surely, 2^20371871900 is an apocalyptic number.

20371871900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20371871900 is an abundant number, since it is smaller than the sum of its proper divisors (23835090340).

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

20371871900 is a wasteful number, since it uses less digits than its factorization.

20371871900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203718733 (or 203718726 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 20371871900 in words is "twenty billion, three hundred seventy-one million, eight hundred seventy-one thousand, nine hundred".