12555503503 has 2 divisors, whose sum is σ = 12555503504. Its totient is φ = 12555503502.

The previous prime is 12555503489. The next prime is 12555503539. The reversal of 12555503503 is 30530555521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12555503503 - 2²¹ = 12553406351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12555503573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277751751 + 6277751752.

It is an arithmetic number, because the mean of its divisors is an integer number (6277751752).

Almost surely, 2^12555503503 is an apocalyptic number.

12555503503 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555503503 is an equidigital number, since it uses as much as digits as its factorization.

12555503503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56250, while the sum is 34.

The spelling of 12555503503 in words is "twelve billion, five hundred fifty-five million, five hundred three thousand, five hundred three".