12157876708123 has 2 divisors, whose sum is σ = 12157876708124. Its totient is φ = 12157876708122.

The previous prime is 12157876708049. The next prime is 12157876708157. The reversal of 12157876708123 is 32180767875121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12157876708123 is a prime.

It is not a weakly prime, because it can be changed into another prime (12157876702123) 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 as a sum of consecutive naturals, namely, 6078938354061 + 6078938354062.

It is an arithmetic number, because the mean of its divisors is an integer number (6078938354062).

Almost surely, 2^{12157876708123} is an apocalyptic number.

12157876708123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12157876708123 is an equidigital number, since it uses as much as digits as its factorization.

12157876708123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 12157876708123 in words is "twelve trillion, one hundred fifty-seven billion, eight hundred seventy-six million, seven hundred eight thousand, one hundred twenty-three".