20202199980 has 48 divisors (see below), whose sum is σ = 56579359200. Its totient is φ = 5385996288.

The previous prime is 20202199957. The next prime is 20202199987. The reversal of 20202199980 is 8999120202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20202199987) 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, 235932 + ... + 309948.

It is an arithmetic number, because the mean of its divisors is an integer number (1178736650).

Almost surely, 2^20202199980 is an apocalyptic number.

20202199980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202199980 is an abundant number, since it is smaller than the sum of its proper divisors (36377159220).

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

20202199980 is a wasteful number, since it uses less digits than its factorization.

20202199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78578 (or 78576 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 20202199980 in words is "twenty billion, two hundred two million, one hundred ninety-nine thousand, nine hundred eighty".