21492746732 has 24 divisors (see below), whose sum is σ = 38219484576. Its totient is φ = 10574224128.

The previous prime is 21492746711. The next prime is 21492746801. The reversal of 21492746732 is 23764729412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101453 + ... + 230820.

It is an arithmetic number, because the mean of its divisors is an integer number (1592478524).

Almost surely, 2^21492746732 is an apocalyptic number.

It is an amenable number.

21492746732 is a deficient number, since it is larger than the sum of its proper divisors (16726737844).

21492746732 is a wasteful number, since it uses less digits than its factorization.

21492746732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332537 (or 332535 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The spelling of 21492746732 in words is "twenty-one billion, four hundred ninety-two million, seven hundred forty-six thousand, seven hundred thirty-two".