21693790300 has 72 divisors (see below), whose sum is σ = 57939131936. Its totient is φ = 6865724160.

The previous prime is 21693790289. The next prime is 21693790301. The reversal of 21693790300 is 309739612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21693790301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1182867 + ... + 1201066.

Almost surely, 2^21693790300 is an apocalyptic number.

21693790300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21693790300 is an abundant number, since it is smaller than the sum of its proper divisors (36245341636).

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

21693790300 is a wasteful number, since it uses less digits than its factorization.

21693790300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383967 (or 2383960 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 40.

The spelling of 21693790300 in words is "twenty-one billion, six hundred ninety-three million, seven hundred ninety thousand, three hundred".