12251356665345 has 48 divisors (see below), whose sum is σ = 24269875344000. Its totient is φ = 5600499916032.

The previous prime is 12251356665311. The next prime is 12251356665347. The reversal of 12251356665345 is 54356665315221.

It is not a de Polignac number, because 12251356665345 - 2⁶ = 12251356665281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12251356665291 and 12251356665300.

It is not an unprimeable number, because it can be changed into a prime (12251356665347) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 15199317 + ... + 15985053.

It is an arithmetic number, because the mean of its divisors is an integer number (505622403000).

Almost surely, 2^{12251356665345} is an apocalyptic number.

12251356665345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12251356665345 is a deficient number, since it is larger than the sum of its proper divisors (12018518678655).

12251356665345 is a wasteful number, since it uses less digits than its factorization.

12251356665345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835254 (or 835251 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 54.

The spelling of 12251356665345 in words is "twelve trillion, two hundred fifty-one billion, three hundred fifty-six million, six hundred sixty-five thousand, three hundred forty-five".