20461890804 has 48 divisors (see below), whose sum is σ = 48453350400. Its totient is φ = 6719727456.

The previous prime is 20461890797. The next prime is 20461890811. The reversal of 20461890804 is 40809816402.

It is an interprime number because it is at equal distance from previous prime (20461890797) and next prime (20461890811).

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, 419607 + ... + 465825.

It is an arithmetic number, because the mean of its divisors is an integer number (1009444800).

Almost surely, 2^20461890804 is an apocalyptic number.

It is an amenable number.

20461890804 is an abundant number, since it is smaller than the sum of its proper divisors (27991459596).

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

20461890804 is a wasteful number, since it uses less digits than its factorization.

20461890804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46772 (or 46770 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 20461890804 in words is "twenty billion, four hundred sixty-one million, eight hundred ninety thousand, eight hundred four".