20344143232 has 32 divisors (see below), whose sum is σ = 46319256720. Its totient is φ = 8718918144.

The previous prime is 20344143229. The next prime is 20344143251. The reversal of 20344143232 is 23234144302.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20344143232.

It is a congruent number.

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, 11351863 + ... + 11353654.

Almost surely, 2^20344143232 is an apocalyptic number.

It is an amenable number.

20344143232 is an abundant number, since it is smaller than the sum of its proper divisors (25975113488).

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

20344143232 is an equidigital number, since it uses as much as digits as its factorization.

20344143232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22705538 (or 22705526 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20344143232 its reverse (23234144302), we get a palindrome (43578287534).

The spelling of 20344143232 in words is "twenty billion, three hundred forty-four million, one hundred forty-three thousand, two hundred thirty-two".