20002199980 has 48 divisors (see below), whose sum is σ = 48544695360. Its totient is φ = 6780837888.

The previous prime is 20002199951. The next prime is 20002199989. The reversal of 20002199980 is 8999120002.

It is not an unprimeable number, because it can be changed into a prime (20002199989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 790197 + ... + 815116.

It is an arithmetic number, because the mean of its divisors is an integer number (1011347820).

Almost surely, 2^20002199980 is an apocalyptic number.

20002199980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002199980 is an abundant number, since it is smaller than the sum of its proper divisors (28542495380).

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

20002199980 is a wasteful number, since it uses less digits than its factorization.

20002199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605418 (or 1605416 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 20002199980 in words is "twenty billion, two million, one hundred ninety-nine thousand, nine hundred eighty".