20667464084 has 12 divisors (see below), whose sum is σ = 36211696500. Its totient is φ = 10321265088.

The previous prime is 20667464063. The next prime is 20667464117. The reversal of 20667464084 is 48046476602.

It can be written as a sum of positive squares in 2 ways, for example, as 6689604100 + 13977859984 = 81790^2 + 118228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113009 + ... + 3119640.

It is an arithmetic number, because the mean of its divisors is an integer number (3017641375).

Almost surely, 2^20667464084 is an apocalyptic number.

It is an amenable number.

20667464084 is a deficient number, since it is larger than the sum of its proper divisors (15544232416).

20667464084 is a wasteful number, since it uses less digits than its factorization.

20667464084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233482 (or 6233480 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 20667464084 in words is "twenty billion, six hundred sixty-seven million, four hundred sixty-four thousand, eighty-four".