20344140344 has 16 divisors (see below), whose sum is σ = 41613014520. Its totient is φ = 9247336480.

The previous prime is 20344140337. The next prime is 20344140359. The reversal of 20344140344 is 44304144302.

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 3 ways as a sum of consecutive naturals, for example, 115591619 + ... + 115591794.

Almost surely, 2^20344140344 is an apocalyptic number.

It is an amenable number.

20344140344 is an abundant number, since it is smaller than the sum of its proper divisors (21268874176).

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

20344140344 is a wasteful number, since it uses less digits than its factorization.

20344140344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231183430 (or 231183426 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 20344140344 its reverse (44304144302), we get a palindrome (64648284646).

The spelling of 20344140344 in words is "twenty billion, three hundred forty-four million, one hundred forty thousand, three hundred forty-four".