21456325260 has 108 divisors (see below), whose sum is σ = 69138040608. Its totient is φ = 5385103872.

The previous prime is 21456325249. The next prime is 21456325283. The reversal of 21456325260 is 6252365412.

21456325260 is a `hidden beast` number, since 2 + 14 + 5 + 632 + 5 + 2 + 6 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 154212 + ... + 258251.

Almost surely, 2^21456325260 is an apocalyptic number.

21456325260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21456325260 is an abundant number, since it is smaller than the sum of its proper divisors (47681715348).

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

21456325260 is a wasteful number, since it uses less digits than its factorization.

21456325260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412512 (or 412490 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 21456325260 in words is "twenty-one billion, four hundred fifty-six million, three hundred twenty-five thousand, two hundred sixty".