12415600861 has 2 divisors, whose sum is σ = 12415600862. Its totient is φ = 12415600860.

The previous prime is 12415600763. The next prime is 12415600891. The reversal of 12415600861 is 16800651421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12186835236 + 228765625 = 110394^2 + 15125^2 .

It is a cyclic number.

It is not a de Polignac number, because 12415600861 - 2¹⁷ = 12415469789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12415600891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6207800430 + 6207800431.

It is an arithmetic number, because the mean of its divisors is an integer number (6207800431).

Almost surely, 2^12415600861 is an apocalyptic number.

It is an amenable number.

12415600861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12415600861 is an equidigital number, since it uses as much as digits as its factorization.

12415600861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 12415600861 in words is "twelve billion, four hundred fifteen million, six hundred thousand, eight hundred sixty-one".