21493034932 has 24 divisors (see below), whose sum is σ = 38771989760. Its totient is φ = 10417468320.

The previous prime is 21493034923. The next prime is 21493034947. The reversal of 21493034932 is 23943039412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227832 + ... + 308047.

Almost surely, 2^21493034932 is an apocalyptic number.

It is an amenable number.

21493034932 is a deficient number, since it is larger than the sum of its proper divisors (17278954828).

21493034932 is a wasteful number, since it uses less digits than its factorization.

21493034932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536191 (or 536189 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 21493034932 in words is "twenty-one billion, four hundred ninety-three million, thirty-four thousand, nine hundred thirty-two".