21430468932 has 12 divisors (see below), whose sum is σ = 50004427536. Its totient is φ = 7143489640.

The previous prime is 21430468921. The next prime is 21430468949. The reversal of 21430468932 is 23986403412.

It is a tau number, because it is divible by the number of its divisors (12).

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, 892936194 + ... + 892936217.

It is an arithmetic number, because the mean of its divisors is an integer number (4167035628).

Almost surely, 2^21430468932 is an apocalyptic number.

It is an amenable number.

21430468932 is an abundant number, since it is smaller than the sum of its proper divisors (28573958604).

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

21430468932 is a wasteful number, since it uses less digits than its factorization.

21430468932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785872418 (or 1785872416 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 21430468932 in words is "twenty-one billion, four hundred thirty million, four hundred sixty-eight thousand, nine hundred thirty-two".