12503253991 has 2 divisors, whose sum is σ = 12503253992. Its totient is φ = 12503253990.

The previous prime is 12503253953. The next prime is 12503254037. The reversal of 12503253991 is 19935230521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12503253991 - 2²⁷ = 12369036263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12503254991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251626995 + 6251626996.

It is an arithmetic number, because the mean of its divisors is an integer number (6251626996).

Almost surely, 2^12503253991 is an apocalyptic number.

12503253991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12503253991 is an equidigital number, since it uses as much as digits as its factorization.

12503253991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 12503253991 in words is "twelve billion, five hundred three million, two hundred fifty-three thousand, nine hundred ninety-one".