19987241372 has 48 divisors (see below), whose sum is σ = 41001992640. Its totient is φ = 8346316800.

The previous prime is 19987241359. The next prime is 19987241389. The reversal of 19987241372 is 27314278991.

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 15 ways as a sum of consecutive naturals, for example, 917972 + ... + 939492.

It is an arithmetic number, because the mean of its divisors is an integer number (854208180).

Almost surely, 2^19987241372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19987241372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20500996320).

19987241372 is an abundant number, since it is smaller than the sum of its proper divisors (21014751268).

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

19987241372 is a wasteful number, since it uses less digits than its factorization.

19987241372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22382 (or 22380 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 53.

The spelling of 19987241372 in words is "nineteen billion, nine hundred eighty-seven million, two hundred forty-one thousand, three hundred seventy-two".