12872068849 has 2 divisors, whose sum is σ = 12872068850. Its totient is φ = 12872068848.

The previous prime is 12872068793. The next prime is 12872068873. The reversal of 12872068849 is 94886027821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12360992400 + 511076449 = 111180^2 + 22607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12872068849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12872068849.

It is not a weakly prime, because it can be changed into another prime (12872068549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6436034424 + 6436034425.

It is an arithmetic number, because the mean of its divisors is an integer number (6436034425).

Almost surely, 2^12872068849 is an apocalyptic number.

It is an amenable number.

12872068849 is a deficient number, since it is larger than the sum of its proper divisors (1).

12872068849 is an equidigital number, since it uses as much as digits as its factorization.

12872068849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 12872068849 in words is "twelve billion, eight hundred seventy-two million, sixty-eight thousand, eight hundred forty-nine".