12456123264615 has 32 divisors (see below), whose sum is σ = 20285603536896. Its totient is φ = 6525699465600.

The previous prime is 12456123264581. The next prime is 12456123264631. The reversal of 12456123264615 is 51646232165421.

It is not a de Polignac number, because 12456123264615 - 2²¹ = 12456121167463 is a prime.

It is a super-2 number, since 2×12456123264615² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32177137 + ... + 32561946.

It is an arithmetic number, because the mean of its divisors is an integer number (633925110528).

Almost surely, 2^{12456123264615} is an apocalyptic number.

12456123264615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12456123264615 is a deficient number, since it is larger than the sum of its proper divisors (7829480272281).

12456123264615 is a wasteful number, since it uses less digits than its factorization.

12456123264615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64739319.

The product of its digits is 2073600, while the sum is 48.

The spelling of 12456123264615 in words is "twelve trillion, four hundred fifty-six billion, one hundred twenty-three million, two hundred sixty-four thousand, six hundred fifteen".