20066404404 has 12 divisors (see below), whose sum is σ = 46821610304. Its totient is φ = 6688801464.

The previous prime is 20066404399. The next prime is 20066404409. The reversal of 20066404404 is 40440466002.

It is an interprime number because it is at equal distance from previous prime (20066404399) and next prime (20066404409).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066404409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836100172 + ... + 836100195.

Almost surely, 2^20066404404 is an apocalyptic number.

It is an amenable number.

20066404404 is an abundant number, since it is smaller than the sum of its proper divisors (26755205900).

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

20066404404 is a wasteful number, since it uses less digits than its factorization.

20066404404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672200374 (or 1672200372 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

It can be divided in two parts, 2006 and 6404404, that added together give a triangular number (6406410 = T₃₅₇₉).

The spelling of 20066404404 in words is "twenty billion, sixty-six million, four hundred four thousand, four hundred four".