21493272802 has 32 divisors (see below), whose sum is σ = 34053022080. Its totient is φ = 10160075520.

The previous prime is 21493272791. The next prime is 21493272833. The reversal of 21493272802 is 20827239412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524227 + ... + 563737.

It is an arithmetic number, because the mean of its divisors is an integer number (1064156940).

Almost surely, 2^21493272802 is an apocalyptic number.

21493272802 is a deficient number, since it is larger than the sum of its proper divisors (12559749278).

21493272802 is a wasteful number, since it uses less digits than its factorization.

21493272802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39738.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 21493272802 in words is "twenty-one billion, four hundred ninety-three million, two hundred seventy-two thousand, eight hundred two".