12312027387551 has 4 divisors (see below), whose sum is σ = 12312925499400. Its totient is φ = 12311129275704.

The previous prime is 12312027387469. The next prime is 12312027387559. The reversal of 12312027387551 is 15578372021321.

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

It is a cyclic number.

It is not a de Polignac number, because 12312027387551 - 2⁴² = 7913980876447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12312027387496 and 12312027387505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312027387559) 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 3 ways as a sum of consecutive naturals, for example, 449035361 + ... + 449062778.

It is an arithmetic number, because the mean of its divisors is an integer number (3078231374850).

Almost surely, 2^{12312027387551} is an apocalyptic number.

12312027387551 is a deficient number, since it is larger than the sum of its proper divisors (898111849).

12312027387551 is an equidigital number, since it uses as much as digits as its factorization.

12312027387551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898111848.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 12312027387551 in words is "twelve trillion, three hundred twelve billion, twenty-seven million, three hundred eighty-seven thousand, five hundred fifty-one".