21990131619300 has 216 divisors, whose sum is σ = 77456255857344. Its totient is φ = 5177609521920.

The previous prime is 21990131619289. The next prime is 21990131619317. The reversal of 21990131619300 is 391613109912.

21990131619300 is a `hidden beast` number, since 2 + 19 + 9 + 0 + 1 + 316 + 19 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40589562 + ... + 41127761.

Almost surely, 2^{21990131619300} is an apocalyptic number.

21990131619300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21990131619300 is an abundant number, since it is smaller than the sum of its proper divisors (55466124238044).

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

21990131619300 is a wasteful number, since it uses less digits than its factorization.

21990131619300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81717379 (or 81717369 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The spelling of 21990131619300 in words is "twenty-one trillion, nine hundred ninety billion, one hundred thirty-one million, six hundred nineteen thousand, three hundred".