12326357821251 has 4 divisors (see below), whose sum is σ = 16435143761672. Its totient is φ = 8217571880832.

The previous prime is 12326357821247. The next prime is 12326357821259. The reversal of 12326357821251 is 15212875362321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12326357821251 - 2² = 12326357821247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12326357821251.

It is not an unprimeable number, because it can be changed into a prime (12326357821259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2054392970206 + ... + 2054392970211.

It is an arithmetic number, because the mean of its divisors is an integer number (4108785940418).

Almost surely, 2^{12326357821251} is an apocalyptic number.

12326357821251 is a deficient number, since it is larger than the sum of its proper divisors (4108785940421).

12326357821251 is an equidigital number, since it uses as much as digits as its factorization.

12326357821251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108785940420.

The product of its digits is 1209600, while the sum is 48.

The spelling of 12326357821251 in words is "twelve trillion, three hundred twenty-six billion, three hundred fifty-seven million, eight hundred twenty-one thousand, two hundred fifty-one".