15131443341491 has 2 divisors, whose sum is σ = 15131443341492. Its totient is φ = 15131443341490.

The previous prime is 15131443341457. The next prime is 15131443341571. The reversal of 15131443341491 is 19414334413151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15131443341491 - 2¹⁰ = 15131443340467 is a prime.

It is not a weakly prime, because it can be changed into another prime (15131443341451) 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, 7565721670745 + 7565721670746.

It is an arithmetic number, because the mean of its divisors is an integer number (7565721670746).

Almost surely, 2^{15131443341491} is an apocalyptic number.

15131443341491 is a deficient number, since it is larger than the sum of its proper divisors (1).

15131443341491 is an equidigital number, since it uses as much as digits as its factorization.

15131443341491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The spelling of 15131443341491 in words is "fifteen trillion, one hundred thirty-one billion, four hundred forty-three million, three hundred forty-one thousand, four hundred ninety-one".