19880559600 has 120 divisors (see below), whose sum is σ = 69473565312. Its totient is φ = 4819526400.

The previous prime is 19880559599. The next prime is 19880559623. The reversal of 19880559600 is 695508891.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 739852 + ... + 766251.

Almost surely, 2^19880559600 is an apocalyptic number.

19880559600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19880559600 is an abundant number, since it is smaller than the sum of its proper divisors (49593005712).

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

19880559600 is a wasteful number, since it uses less digits than its factorization.

19880559600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506135 (or 1506124 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 19880559600 in words is "nineteen billion, eight hundred eighty million, five hundred fifty-nine thousand, six hundred".