12698877871 has 2 divisors, whose sum is σ = 12698877872. Its totient is φ = 12698877870.

The previous prime is 12698877859. The next prime is 12698877901. The reversal of 12698877871 is 17877889621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12698877871 is a prime.

It is a super-4 number, since 4×12698877871⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12698877671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6349438935 + 6349438936.

It is an arithmetic number, because the mean of its divisors is an integer number (6349438936).

Almost surely, 2^12698877871 is an apocalyptic number.

12698877871 is a deficient number, since it is larger than the sum of its proper divisors (1).

12698877871 is an equidigital number, since it uses as much as digits as its factorization.

12698877871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18966528, while the sum is 64.

The spelling of 12698877871 in words is "twelve billion, six hundred ninety-eight million, eight hundred seventy-seven thousand, eight hundred seventy-one".