21336313800 has 96 divisors (see below), whose sum is σ = 66171077280. Its totient is φ = 5687232000.

The previous prime is 21336313799. The next prime is 21336313841. The reversal of 21336313800 is 831363312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1704364 + ... + 1716836.

It is an arithmetic number, because the mean of its divisors is an integer number (689282055).

Almost surely, 2^21336313800 is an apocalyptic number.

21336313800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21336313800 is an abundant number, since it is smaller than the sum of its proper divisors (44834763480).

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

21336313800 is a wasteful number, since it uses less digits than its factorization.

21336313800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15343 (or 15334 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 21336313800 in words is "twenty-one billion, three hundred thirty-six million, three hundred thirteen thousand, eight hundred".