12912916265249 has 32 divisors (see below), whose sum is σ = 17664746851584. Its totient is φ = 9112766158080.

The previous prime is 12912916265243. The next prime is 12912916265269. The reversal of 12912916265249 is 94256261921921.

It is not a de Polignac number, because 12912916265249 - 2¹² = 12912916261153 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12912916265243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121645214 + ... + 121751319.

It is an arithmetic number, because the mean of its divisors is an integer number (552023339112).

Almost surely, 2^{12912916265249} is an apocalyptic number.

It is an amenable number.

12912916265249 is a deficient number, since it is larger than the sum of its proper divisors (4751830586335).

12912916265249 is a wasteful number, since it uses less digits than its factorization.

12912916265249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243396617.

The product of its digits is 8398080, while the sum is 59.

The spelling of 12912916265249 in words is "twelve trillion, nine hundred twelve billion, nine hundred sixteen million, two hundred sixty-five thousand, two hundred forty-nine".