21411025800 has 48 divisors (see below), whose sum is σ = 66374181840. Its totient is φ = 5709606720.

The previous prime is 21411025793. The next prime is 21411025813. The reversal of 21411025800 is 852011412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17841922 + ... + 17843121.

It is an arithmetic number, because the mean of its divisors is an integer number (1382795455).

Almost surely, 2^21411025800 is an apocalyptic number.

21411025800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21411025800 is an abundant number, since it is smaller than the sum of its proper divisors (44963156040).

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

21411025800 is a wasteful number, since it uses less digits than its factorization.

21411025800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35685062 (or 35685053 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The spelling of 21411025800 in words is "twenty-one billion, four hundred eleven million, twenty-five thousand, eight hundred".