20884884680 has 64 divisors (see below), whose sum is σ = 51299611200. Its totient is φ = 7589064960.

The previous prime is 20884884677. The next prime is 20884884749. The reversal of 20884884680 is 8648848802.

It is a happy 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, 625694 + ... + 658226.

It is an arithmetic number, because the mean of its divisors is an integer number (801556425).

Almost surely, 2^20884884680 is an apocalyptic number.

20884884680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20884884680 is an abundant number, since it is smaller than the sum of its proper divisors (30414726520).

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

20884884680 is a wasteful number, since it uses less digits than its factorization.

20884884680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34014 (or 34010 counting only the distinct ones).

The product of its (nonzero) digits is 6291456, while the sum is 56.

The spelling of 20884884680 in words is "twenty billion, eight hundred eighty-four million, eight hundred eighty-four thousand, six hundred eighty".