21024562000 has 80 divisors (see below), whose sum is σ = 54748027152. Its totient is φ = 7762905600.

The previous prime is 21024561959. The next prime is 21024562001. The reversal of 21024562000 is 26542012.

It can be written as a sum of positive squares in 8 ways, for example, as 8900790336 + 12123771664 = 94344^2 + 110108^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21024562001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378319 + ... + 430318.

Almost surely, 2^21024562000 is an apocalyptic number.

21024562000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21024562000 is an abundant number, since it is smaller than the sum of its proper divisors (33723465152).

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

21024562000 is a wasteful number, since it uses less digits than its factorization.

21024562000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808673 (or 808657 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The spelling of 21024562000 in words is "twenty-one billion, twenty-four million, five hundred sixty-two thousand".