12901215461 has 2 divisors, whose sum is σ = 12901215462. Its totient is φ = 12901215460.

The previous prime is 12901215451. The next prime is 12901215469. The reversal of 12901215461 is 16451210921.

12901215461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7446654436 + 5454561025 = 86294^2 + 73855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12901215461 is a prime.

It is a super-2 number, since 2×12901215461² (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 (12901215469) 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, 6450607730 + 6450607731.

It is an arithmetic number, because the mean of its divisors is an integer number (6450607731).

Almost surely, 2^12901215461 is an apocalyptic number.

It is an amenable number.

12901215461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12901215461 is an equidigital number, since it uses as much as digits as its factorization.

12901215461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 12901215461 in words is "twelve billion, nine hundred one million, two hundred fifteen thousand, four hundred sixty-one".