20584476880 has 80 divisors (see below), whose sum is σ = 54957643200. Its totient is φ = 7091297280.

The previous prime is 20584476751. The next prime is 20584476893. The reversal of 20584476880 is 8867448502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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, 598845 + ... + 632284.

It is an arithmetic number, because the mean of its divisors is an integer number (686970540).

Almost surely, 2^20584476880 is an apocalyptic number.

20584476880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20584476880 is an abundant number, since it is smaller than the sum of its proper divisors (34373166320).

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

20584476880 is a wasteful number, since it uses less digits than its factorization.

20584476880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231172 (or 1231166 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 52.

The spelling of 20584476880 in words is "twenty billion, five hundred eighty-four million, four hundred seventy-six thousand, eight hundred eighty".