12558708991 has 2 divisors, whose sum is σ = 12558708992. Its totient is φ = 12558708990.

The previous prime is 12558708971. The next prime is 12558708997. The reversal of 12558708991 is 19980785521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12558708991 - 2⁵ = 12558708959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12558708997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279354495 + 6279354496.

It is an arithmetic number, because the mean of its divisors is an integer number (6279354496).

Almost surely, 2^12558708991 is an apocalyptic number.

12558708991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12558708991 is an equidigital number, since it uses as much as digits as its factorization.

12558708991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 55.

The spelling of 12558708991 in words is "twelve billion, five hundred fifty-eight million, seven hundred eight thousand, nine hundred ninety-one".