12499895644079 has 2 divisors, whose sum is σ = 12499895644080. Its totient is φ = 12499895644078.

The previous prime is 12499895644073. The next prime is 12499895644127. The reversal of 12499895644079 is 97044659899421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12499895644079 - 2²⁸ = 12499627208623 is a prime.

It is a super-2 number, since 2×12499895644079² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12499895644073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6249947822039 + 6249947822040.

It is an arithmetic number, because the mean of its divisors is an integer number (6249947822040).

Almost surely, 2^{12499895644079} is an apocalyptic number.

12499895644079 is a deficient number, since it is larger than the sum of its proper divisors (1).

12499895644079 is an equidigital number, since it uses as much as digits as its factorization.

12499895644079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1410877440, while the sum is 77.

The spelling of 12499895644079 in words is "twelve trillion, four hundred ninety-nine billion, eight hundred ninety-five million, six hundred forty-four thousand, seventy-nine".