12890868071 has 2 divisors, whose sum is σ = 12890868072. Its totient is φ = 12890868070.

The previous prime is 12890868061. The next prime is 12890868143. The reversal of 12890868071 is 17086809821.

It is a weak prime.

It is an emirp because it is prime and its reverse (17086809821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12890868071 - 2⁶ = 12890868007 is a prime.

It is a super-2 number, since 2×12890868071² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12890868031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6445434035 + 6445434036.

It is an arithmetic number, because the mean of its divisors is an integer number (6445434036).

Almost surely, 2^12890868071 is an apocalyptic number.

12890868071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12890868071 is an equidigital number, since it uses as much as digits as its factorization.

12890868071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 50.

The spelling of 12890868071 in words is "twelve billion, eight hundred ninety million, eight hundred sixty-eight thousand, seventy-one".