12465415256261 has 8 divisors (see below), whose sum is σ = 13601149895424. Its totient is φ = 11330099795520.

The previous prime is 12465415256237. The next prime is 12465415256263. The reversal of 12465415256261 is 16265251456421.

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 12465415256261 - 2¹⁸ = 12465414994117 is a prime.

It is a super-3 number, since 3×12465415256261³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12465415256263) 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 7 ways as a sum of consecutive naturals, for example, 104732420 + ... + 104851373.

It is an arithmetic number, because the mean of its divisors is an integer number (1700143736928).

Almost surely, 2^{12465415256261} is an apocalyptic number.

12465415256261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12465415256261 is a deficient number, since it is larger than the sum of its proper divisors (1135734639163).

12465415256261 is a wasteful number, since it uses less digits than its factorization.

12465415256261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209589211.

The product of its digits is 3456000, while the sum is 50.

The spelling of 12465415256261 in words is "twelve trillion, four hundred sixty-five billion, four hundred fifteen million, two hundred fifty-six thousand, two hundred sixty-one".