21507053230 has 96 divisors (see below), whose sum is σ = 44457141600. Its totient is φ = 7466674176.

The previous prime is 21507053201. The next prime is 21507053257. The reversal of 21507053230 is 3235070512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4396626 + ... + 4401514.

It is an arithmetic number, because the mean of its divisors is an integer number (463095225).

Almost surely, 2^21507053230 is an apocalyptic number.

21507053230 is an abundant number, since it is smaller than the sum of its proper divisors (22950088370).

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

21507053230 is a wasteful number, since it uses less digits than its factorization.

21507053230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078 (or 5065 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The spelling of 21507053230 in words is "twenty-one billion, five hundred seven million, fifty-three thousand, two hundred thirty".