12919319616 has 84 divisors (see below), whose sum is σ = 39763189968. Its totient is φ = 3691231488.

The previous prime is 12919319603. The next prime is 12919319641. The reversal of 12919319616 is 61691391921.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 677206 + ... + 696021.

Almost surely, 2^12919319616 is an apocalyptic number.

12919319616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12919319616 is an abundant number, since it is smaller than the sum of its proper divisors (26843870352).

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

12919319616 is a wasteful number, since it uses less digits than its factorization.

12919319616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373256 (or 1373239 counting only the distinct ones).

The product of its digits is 157464, while the sum is 48.

The spelling of 12919319616 in words is "twelve billion, nine hundred nineteen million, three hundred nineteen thousand, six hundred sixteen".