21056260230 has 40 divisors (see below), whose sum is σ = 56617946352. Its totient is φ = 5615002512.

The previous prime is 21056260229. The next prime is 21056260373. The reversal of 21056260230 is 3206265012.

21056260230 is a `hidden beast` number, since 2 + 1 + 0 + 5 + 626 + 0 + 2 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21056260194 and 21056260203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12996882 + ... + 12998501.

Almost surely, 2^21056260230 is an apocalyptic number.

21056260230 is an abundant number, since it is smaller than the sum of its proper divisors (35561686122).

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

21056260230 is a wasteful number, since it uses less digits than its factorization.

21056260230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25995402 (or 25995393 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 21056260230 in words is "twenty-one billion, fifty-six million, two hundred sixty thousand, two hundred thirty".