19599039372 has 144 divisors (see below), whose sum is σ = 53813289600. Its totient is φ = 5530694400.

The previous prime is 19599039367. The next prime is 19599039403. The reversal of 19599039372 is 27393099591.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1621672 + ... + 1633712.

It is an arithmetic number, because the mean of its divisors is an integer number (373703400).

Almost surely, 2^19599039372 is an apocalyptic number.

19599039372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19599039372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26906644800).

19599039372 is an abundant number, since it is smaller than the sum of its proper divisors (34214250228).

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

19599039372 is a wasteful number, since it uses less digits than its factorization.

19599039372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148 (or 12135 counting only the distinct ones).

The product of its (nonzero) digits is 4133430, while the sum is 57.

The spelling of 19599039372 in words is "nineteen billion, five hundred ninety-nine million, thirty-nine thousand, three hundred seventy-two".