19375728768 has 160 divisors (see below), whose sum is σ = 62904211920. Its totient is φ = 5871398400.

The previous prime is 19375728721. The next prime is 19375728769. The reversal of 19375728768 is 86782757391.

It is a super-2 number, since 2×19375728768² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19375728769) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29103 + ... + 198993.

Almost surely, 2^19375728768 is an apocalyptic number.

19375728768 is a gapful number since it is divisible by the number (18) 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 19375728768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31452105960).

19375728768 is an abundant number, since it is smaller than the sum of its proper divisors (43528483152).

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

19375728768 is a wasteful number, since it uses less digits than its factorization.

19375728768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169928 (or 169907 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 19375728768 in words is "nineteen billion, three hundred seventy-five million, seven hundred twenty-eight thousand, seven hundred sixty-eight".