12651263901265 has 8 divisors (see below), whose sum is σ = 16561654561728. Its totient is φ = 9200919200880.

The previous prime is 12651263901203. The next prime is 12651263901271. The reversal of 12651263901265 is 56210936215621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12651263901265 - 2⁴¹ = 10452240645713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115011489957 + ... + 115011490066.

It is an arithmetic number, because the mean of its divisors is an integer number (2070206820216).

Almost surely, 2^{12651263901265} is an apocalyptic number.

It is an amenable number.

12651263901265 is a deficient number, since it is larger than the sum of its proper divisors (3910390660463).

12651263901265 is a wasteful number, since it uses less digits than its factorization.

12651263901265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230022980039.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 12651263901265 in words is "twelve trillion, six hundred fifty-one billion, two hundred sixty-three million, nine hundred one thousand, two hundred sixty-five".