12555493523 has 2 divisors, whose sum is σ = 12555493524. Its totient is φ = 12555493522.

The previous prime is 12555493519. The next prime is 12555493541. The reversal of 12555493523 is 32539455521.

12555493523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12555493523 - 2² = 12555493519 is a prime.

It is not a weakly prime, because it can be changed into another prime (12555493513) 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, 6277746761 + 6277746762.

It is an arithmetic number, because the mean of its divisors is an integer number (6277746762).

Almost surely, 2^12555493523 is an apocalyptic number.

12555493523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555493523 is an equidigital number, since it uses as much as digits as its factorization.

12555493523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810000, while the sum is 44.

The spelling of 12555493523 in words is "twelve billion, five hundred fifty-five million, four hundred ninety-three thousand, five hundred twenty-three".