21037453092 has 36 divisors (see below), whose sum is σ = 54475034796. Its totient is φ = 6841447680.

The previous prime is 21037453039. The next prime is 21037453111. The reversal of 21037453092 is 29035473012.

21037453092 is a `hidden beast` number, since 2 + 1 + 0 + 37 + 4 + 530 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1725903936 + 19311549156 = 41544^2 + 138966^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 7125033 + ... + 7127984.

It is an arithmetic number, because the mean of its divisors is an integer number (1513195411).

Almost surely, 2^21037453092 is an apocalyptic number.

It is an amenable number.

21037453092 is an abundant number, since it is smaller than the sum of its proper divisors (33437581704).

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

21037453092 is a wasteful number, since it uses less digits than its factorization.

21037453092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14253068 (or 14253063 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 21037453092 in words is "twenty-one billion, thirty-seven million, four hundred fifty-three thousand, ninety-two".