20013905344 has 28 divisors (see below), whose sum is σ = 39719623888. Its totient is φ = 10005811200.

The previous prime is 20013905339. The next prime is 20013905413. The reversal of 20013905344 is 44350931002.

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, 982624 + ... + 1002784.

It is an arithmetic number, because the mean of its divisors is an integer number (1418557996).

Almost surely, 2^20013905344 is an apocalyptic number.

It is an amenable number.

20013905344 is a deficient number, since it is larger than the sum of its proper divisors (19705718544).

20013905344 is a wasteful number, since it uses less digits than its factorization.

20013905344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35684 (or 35674 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 20013905344 in words is "twenty billion, thirteen million, nine hundred five thousand, three hundred forty-four".