20485544874 has 16 divisors (see below), whose sum is σ = 41006332512. Its totient is φ = 6822641168.

The previous prime is 20485544869. The next prime is 20485544897. The reversal of 20485544874 is 47844558402.

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, 1460889 + ... + 1474844.

It is an arithmetic number, because the mean of its divisors is an integer number (2562895782).

Almost surely, 2^20485544874 is an apocalyptic number.

20485544874 is an abundant number, since it is smaller than the sum of its proper divisors (20520787638).

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

20485544874 is a wasteful number, since it uses less digits than its factorization.

20485544874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936901.

The product of its (nonzero) digits is 5734400, while the sum is 51.

The spelling of 20485544874 in words is "twenty billion, four hundred eighty-five million, five hundred forty-four thousand, eight hundred seventy-four".