12558708997 has 2 divisors, whose sum is σ = 12558708998. Its totient is φ = 12558708996.

The previous prime is 12558708991. The next prime is 12558709003. The reversal of 12558708997 is 79980785521.

It is a balanced prime because it is at equal distance from previous prime (12558708991) and next prime (12558709003).

It can be written as a sum of positive squares in only one way, i.e., 9359788516 + 3198920481 = 96746^2 + 56559^2 .

It is a cyclic number.

It is not a de Polignac number, because 12558708997 - 2²⁷ = 12424491269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12558708991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279354498 + 6279354499.

It is an arithmetic number, because the mean of its divisors is an integer number (6279354499).

Almost surely, 2^12558708997 is an apocalyptic number.

It is an amenable number.

12558708997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12558708997 is an equidigital number, since it uses as much as digits as its factorization.

12558708997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12700800, while the sum is 61.

The spelling of 12558708997 in words is "twelve billion, five hundred fifty-eight million, seven hundred eight thousand, nine hundred ninety-seven".