20503517244 has 48 divisors (see below), whose sum is σ = 56561433600. Its totient is φ = 5656142016.

The previous prime is 20503517239. The next prime is 20503517317. The reversal of 20503517244 is 44271530502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4206004 + ... + 4210875.

It is an arithmetic number, because the mean of its divisors is an integer number (1178363200).

Almost surely, 2^20503517244 is an apocalyptic number.

It is an amenable number.

20503517244 is an abundant number, since it is smaller than the sum of its proper divisors (36057916356).

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

20503517244 is a wasteful number, since it uses less digits than its factorization.

20503517244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416922 (or 8416920 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20503517244 in words is "twenty billion, five hundred three million, five hundred seventeen thousand, two hundred forty-four".