19975555432 has 32 divisors (see below), whose sum is σ = 42836238720. Its totient is φ = 8554656960.

The previous prime is 19975555423. The next prime is 19975555447. The reversal of 19975555432 is 23455557991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53919 + ... + 207022.

It is an arithmetic number, because the mean of its divisors is an integer number (1338632460).

Almost surely, 2^19975555432 is an apocalyptic number.

It is an amenable number.

19975555432 is an abundant number, since it is smaller than the sum of its proper divisors (22860683288).

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

19975555432 is a wasteful number, since it uses less digits than its factorization.

19975555432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262321 (or 262317 counting only the distinct ones).

The product of its digits is 8505000, while the sum is 55.

The spelling of 19975555432 in words is "nineteen billion, nine hundred seventy-five million, five hundred fifty-five thousand, four hundred thirty-two".