12151278511843 has 4 divisors (see below), whose sum is σ = 12151285487488. Its totient is φ = 12151271536200.

The previous prime is 12151278511837. The next prime is 12151278511849. The reversal of 12151278511843 is 34811587215121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12151278511837) and next prime (12151278511849).

It is a cyclic number.

It is not a de Polignac number, because 12151278511843 - 2²⁹ = 12150741640931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12151278511849) 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, 1568830 + ... + 5173372.

It is an arithmetic number, because the mean of its divisors is an integer number (3037821371872).

Almost surely, 2^{12151278511843} is an apocalyptic number.

12151278511843 is a deficient number, since it is larger than the sum of its proper divisors (6975645).

12151278511843 is an equidigital number, since it uses as much as digits as its factorization.

12151278511843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6975644.

The product of its digits is 537600, while the sum is 49.

The spelling of 12151278511843 in words is "twelve trillion, one hundred fifty-one billion, two hundred seventy-eight million, five hundred eleven thousand, eight hundred forty-three".