21432933412 has 24 divisors (see below), whose sum is σ = 40934803392. Its totient is φ = 9738103200.

The previous prime is 21432933397. The next prime is 21432933437. The reversal of 21432933412 is 21433923412.

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, 2473 + ... + 207055.

It is an arithmetic number, because the mean of its divisors is an integer number (1705616808).

Almost surely, 2^21432933412 is an apocalyptic number.

21432933412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21432933412 is a deficient number, since it is larger than the sum of its proper divisors (19501869980).

21432933412 is a wasteful number, since it uses less digits than its factorization.

21432933412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206979 (or 206977 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The spelling of 21432933412 in words is "twenty-one billion, four hundred thirty-two million, nine hundred thirty-three thousand, four hundred twelve".