19119981312 has 90 divisors (see below), whose sum is σ = 57012386508. Its totient is φ = 6373320192.

The previous prime is 19119981269. The next prime is 19119981323. The reversal of 19119981312 is 21318991191.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 440298 + ... + 481769.

Almost surely, 2^19119981312 is an apocalyptic number.

19119981312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19119981312 is an abundant number, since it is smaller than the sum of its proper divisors (37892405196).

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

19119981312 is an frugal number, since it uses more digits than its factorization.

19119981312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922095 (or 922072 counting only the distinct ones).

The product of its digits is 34992, while the sum is 45.

The spelling of 19119981312 in words is "nineteen billion, one hundred nineteen million, nine hundred eighty-one thousand, three hundred twelve".