20454408844 has 24 divisors (see below), whose sum is σ = 35874856080. Its totient is φ = 10204478016.

The previous prime is 20454408803. The next prime is 20454408859. The reversal of 20454408844 is 44880445402.

It is a self number, because there is not a number n which added to its sum of digits gives 20454408844.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4164262 + ... + 4169170.

It is an arithmetic number, because the mean of its divisors is an integer number (1494785670).

Almost surely, 2^20454408844 is an apocalyptic number.

It is an amenable number.

20454408844 is a deficient number, since it is larger than the sum of its proper divisors (15420447236).

20454408844 is a wasteful number, since it uses less digits than its factorization.

20454408844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017 (or 7015 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 43.

The spelling of 20454408844 in words is "twenty billion, four hundred fifty-four million, four hundred eight thousand, eight hundred forty-four".