19875871580 has 12 divisors (see below), whose sum is σ = 41739330360. Its totient is φ = 7950348624.

The previous prime is 19875871541. The next prime is 19875871601. The reversal of 19875871580 is 8517857891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496896770 + ... + 496896809.

It is an arithmetic number, because the mean of its divisors is an integer number (3478277530).

Almost surely, 2^19875871580 is an apocalyptic number.

19875871580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19875871580 is an abundant number, since it is smaller than the sum of its proper divisors (21863458780).

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

19875871580 is a wasteful number, since it uses less digits than its factorization.

19875871580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993793588 (or 993793586 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 59.

The spelling of 19875871580 in words is "nineteen billion, eight hundred seventy-five million, eight hundred seventy-one thousand, five hundred eighty".