21254541332 has 12 divisors (see below), whose sum is σ = 37197693120. Its totient is φ = 10626629016.

The previous prime is 21254541323. The next prime is 21254541359. The reversal of 21254541332 is 23314545212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81578 + ... + 221729.

It is an arithmetic number, because the mean of its divisors is an integer number (3099807760).

Almost surely, 2^21254541332 is an apocalyptic number.

It is an amenable number.

21254541332 is a deficient number, since it is larger than the sum of its proper divisors (15943151788).

21254541332 is a wasteful number, since it uses less digits than its factorization.

21254541332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320830 (or 320828 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The spelling of 21254541332 in words is "twenty-one billion, two hundred fifty-four million, five hundred forty-one thousand, three hundred thirty-two".