20513041344 has 84 divisors (see below), whose sum is σ = 60974639544. Its totient is φ = 6837675264.

The previous prime is 20513041333. The next prime is 20513041357. The reversal of 20513041344 is 44314031502.

It is a happy number.

20513041344 is a `hidden beast` number, since 205 + 1 + 3 + 0 + 413 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643947 + ... + 675050.

It is an arithmetic number, because the mean of its divisors is an integer number (725888566).

Almost surely, 2^20513041344 is an apocalyptic number.

20513041344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20513041344 is an abundant number, since it is smaller than the sum of its proper divisors (40461598200).

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

20513041344 is an equidigital number, since it uses as much as digits as its factorization.

20513041344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319024 (or 1319002 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20513041344 its reverse (44314031502), we get a palindrome (64827072846).

The spelling of 20513041344 in words is "twenty billion, five hundred thirteen million, forty-one thousand, three hundred forty-four".