21433439192 has 16 divisors (see below), whose sum is σ = 43841125800. Its totient is φ = 9742472320.

The previous prime is 21433439191. The next prime is 21433439263. The reversal of 21433439192 is 29193433412.

It is a super-2 number, since 2×21433439192² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433439191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121780817 + ... + 121780992.

Almost surely, 2^21433439192 is an apocalyptic number.

21433439192 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21433439192 is an abundant number, since it is smaller than the sum of its proper divisors (22407686608).

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

21433439192 is a wasteful number, since it uses less digits than its factorization.

21433439192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243561826 (or 243561822 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The spelling of 21433439192 in words is "twenty-one billion, four hundred thirty-three million, four hundred thirty-nine thousand, one hundred ninety-two".