12516433751 has 2 divisors, whose sum is σ = 12516433752. Its totient is φ = 12516433750.

The previous prime is 12516433697. The next prime is 12516433771. The reversal of 12516433751 is 15733461521.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15733461521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12516433751 is a prime.

It is a super-2 number, since 2×12516433751² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12516433771) 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 as a sum of consecutive naturals, namely, 6258216875 + 6258216876.

It is an arithmetic number, because the mean of its divisors is an integer number (6258216876).

Almost surely, 2^12516433751 is an apocalyptic number.

12516433751 is a deficient number, since it is larger than the sum of its proper divisors (1).

12516433751 is an equidigital number, since it uses as much as digits as its factorization.

12516433751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The spelling of 12516433751 in words is "twelve billion, five hundred sixteen million, four hundred thirty-three thousand, seven hundred fifty-one".