12945504319 has 8 divisors (see below), whose sum is σ = 14239083600. Its totient is φ = 11768639080.

The previous prime is 12945504317. The next prime is 12945504331. The reversal of 12945504319 is 91340554921.

It is not a de Polignac number, because 12945504319 - 2¹ = 12945504317 is a prime.

It is a super-2 number, since 2×12945504319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945504317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4861744 + ... + 4864405.

It is an arithmetic number, because the mean of its divisors is an integer number (1779885450).

Almost surely, 2^12945504319 is an apocalyptic number.

12945504319 is a deficient number, since it is larger than the sum of its proper divisors (1293579281).

12945504319 is an frugal number, since it uses more digits than its factorization.

12945504319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9726182 (or 9726160 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 12945504319 in words is "twelve billion, nine hundred forty-five million, five hundred four thousand, three hundred nineteen".