12376157681 has 2 divisors, whose sum is σ = 12376157682. Its totient is φ = 12376157680.

The previous prime is 12376157671. The next prime is 12376157693. The reversal of 12376157681 is 18675167321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8459400625 + 3916757056 = 91975^2 + 62584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12376157681 is a prime.

It is a super-2 number, since 2×12376157681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12376157671) 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, 6188078840 + 6188078841.

It is an arithmetic number, because the mean of its divisors is an integer number (6188078841).

Almost surely, 2^12376157681 is an apocalyptic number.

It is an amenable number.

12376157681 is a deficient number, since it is larger than the sum of its proper divisors (1).

12376157681 is an equidigital number, since it uses as much as digits as its factorization.

12376157681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The spelling of 12376157681 in words is "twelve billion, three hundred seventy-six million, one hundred fifty-seven thousand, six hundred eighty-one".