12144115415251 has 4 divisors (see below), whose sum is σ = 12144819888400. Its totient is φ = 12143410942104.

The previous prime is 12144115415233. The next prime is 12144115415273. The reversal of 12144115415251 is 15251451144121.

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 12144115415251 - 2²³ = 12144107026643 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 12144115415251.

It is not an unprimeable number, because it can be changed into a prime (12144115415651) 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, 352210716 + ... + 352245193.

It is an arithmetic number, because the mean of its divisors is an integer number (3036204972100).

Almost surely, 2^{12144115415251} is an apocalyptic number.

12144115415251 is a deficient number, since it is larger than the sum of its proper divisors (704473149).

12144115415251 is an equidigital number, since it uses as much as digits as its factorization.

12144115415251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704473148.

The product of its digits is 32000, while the sum is 37.

Adding to 12144115415251 its reverse (15251451144121), we get a palindrome (27395566559372).

The spelling of 12144115415251 in words is "twelve trillion, one hundred forty-four billion, one hundred fifteen million, four hundred fifteen thousand, two hundred fifty-one".