19800223980 has 48 divisors (see below), whose sum is σ = 55450531584. Its totient is φ = 5279116480.

The previous prime is 19800223939. The next prime is 19800223991. The reversal of 19800223980 is 8932200891.

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, 349435 + ... + 402125.

It is an arithmetic number, because the mean of its divisors is an integer number (1155219408).

Almost surely, 2^19800223980 is an apocalyptic number.

19800223980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19800223980 is an abundant number, since it is smaller than the sum of its proper divisors (35650307604).

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

19800223980 is a wasteful number, since it uses less digits than its factorization.

19800223980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58966 (or 58964 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 19800223980 in words is "nineteen billion, eight hundred million, two hundred twenty-three thousand, nine hundred eighty".