15686413441 has 2 divisors, whose sum is σ = 15686413442. Its totient is φ = 15686413440.

The previous prime is 15686413423. The next prime is 15686413453. The reversal of 15686413441 is 14431468651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8884947600 + 6801465841 = 94260^2 + 82471^2 .

It is a cyclic number.

It is not a de Polignac number, because 15686413441 - 2⁷ = 15686413313 is a prime.

It is not a weakly prime, because it can be changed into another prime (15686413541) 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, 7843206720 + 7843206721.

It is an arithmetic number, because the mean of its divisors is an integer number (7843206721).

Almost surely, 2^15686413441 is an apocalyptic number.

It is an amenable number.

15686413441 is a deficient number, since it is larger than the sum of its proper divisors (1).

15686413441 is an equidigital number, since it uses as much as digits as its factorization.

15686413441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 43.

The spelling of 15686413441 in words is "fifteen billion, six hundred eighty-six million, four hundred thirteen thousand, four hundred forty-one".