21274460532 has 36 divisors (see below), whose sum is σ = 57913810500. Its totient is φ = 6545987712.

The previous prime is 21274460513. The next prime is 21274460567. The reversal of 21274460532 is 23506447212.

21274460532 is a `hidden beast` number, since 2 + 1 + 2 + 7 + 44 + 605 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7095366756 + 14179093776 = 84234^2 + 119076^2 .

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 a congruent number.

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, 22728657 + ... + 22729592.

Almost surely, 2^21274460532 is an apocalyptic number.

It is an amenable number.

21274460532 is an abundant number, since it is smaller than the sum of its proper divisors (36639349968).

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

21274460532 is a wasteful number, since it uses less digits than its factorization.

21274460532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45458272 (or 45458267 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 21274460532 in words is "twenty-one billion, two hundred seventy-four million, four hundred sixty thousand, five hundred thirty-two".