12546491519 has 2 divisors, whose sum is σ = 12546491520. Its totient is φ = 12546491518.

The previous prime is 12546491501. The next prime is 12546491561. The reversal of 12546491519 is 91519464521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12546491519 - 2⁸ = 12546491263 is a prime.

It is a super-2 number, since 2×12546491519² (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 (12546491569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273245759 + 6273245760.

It is an arithmetic number, because the mean of its divisors is an integer number (6273245760).

Almost surely, 2^12546491519 is an apocalyptic number.

12546491519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546491519 is an equidigital number, since it uses as much as digits as its factorization.

12546491519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 47.

The spelling of 12546491519 in words is "twelve billion, five hundred forty-six million, four hundred ninety-one thousand, five hundred nineteen".