12519447265 has 16 divisors (see below), whose sum is σ = 16183314000. Its totient is φ = 9242652672.

The previous prime is 12519447251. The next prime is 12519447271. The reversal of 12519447265 is 56274491521.

It can be written as a sum of positive squares in 8 ways, for example, as 2063975761 + 10455471504 = 45431^2 + 102252^2 .

It is a cyclic number.

It is not a de Polignac number, because 12519447265 - 2⁷ = 12519447137 is a prime.

It is a super-2 number, since 2×12519447265² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239401 + ... + 286969.

It is an arithmetic number, because the mean of its divisors is an integer number (1011457125).

Almost surely, 2^12519447265 is an apocalyptic number.

It is an amenable number.

12519447265 is a deficient number, since it is larger than the sum of its proper divisors (3663866735).

12519447265 is a wasteful number, since it uses less digits than its factorization.

12519447265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51636.

The product of its digits is 604800, while the sum is 46.

The spelling of 12519447265 in words is "twelve billion, five hundred nineteen million, four hundred forty-seven thousand, two hundred sixty-five".