12980156461 has 2 divisors, whose sum is σ = 12980156462. Its totient is φ = 12980156460.

The previous prime is 12980156459. The next prime is 12980156471. The reversal of 12980156461 is 16465108921.

12980156461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8263900836 + 4716255625 = 90906^2 + 68675^2 .

It is a cyclic number.

It is not a de Polignac number, because 12980156461 - 2¹ = 12980156459 is a prime.

Together with 12980156459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12980156401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490078230 + 6490078231.

It is an arithmetic number, because the mean of its divisors is an integer number (6490078231).

Almost surely, 2^12980156461 is an apocalyptic number.

It is an amenable number.

12980156461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12980156461 is an equidigital number, since it uses as much as digits as its factorization.

12980156461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 12980156461 in words is "twelve billion, nine hundred eighty million, one hundred fifty-six thousand, four hundred sixty-one".