20461477484 has 24 divisors (see below), whose sum is σ = 41032688928. Its totient is φ = 8745690240.

The previous prime is 20461477469. The next prime is 20461477537. The reversal of 20461477484 is 48477416402.

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, 969137 + ... + 990024.

It is an arithmetic number, because the mean of its divisors is an integer number (1709695372).

Almost surely, 2^20461477484 is an apocalyptic number.

It is an amenable number.

20461477484 is an abundant number, since it is smaller than the sum of its proper divisors (20571211444).

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

20461477484 is a wasteful number, since it uses less digits than its factorization.

20461477484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959545 (or 1959543 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 47.

The spelling of 20461477484 in words is "twenty billion, four hundred sixty-one million, four hundred seventy-seven thousand, four hundred eighty-four".