12712550399 has 2 divisors, whose sum is σ = 12712550400. Its totient is φ = 12712550398.

The previous prime is 12712550387. The next prime is 12712550423. The reversal of 12712550399 is 99305521721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12712550399 - 2²⁰ = 12711501823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12712550329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6356275199 + 6356275200.

It is an arithmetic number, because the mean of its divisors is an integer number (6356275200).

Almost surely, 2^12712550399 is an apocalyptic number.

12712550399 is a deficient number, since it is larger than the sum of its proper divisors (1).

12712550399 is an equidigital number, since it uses as much as digits as its factorization.

12712550399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 44.

The spelling of 12712550399 in words is "twelve billion, seven hundred twelve million, five hundred fifty thousand, three hundred ninety-nine".