12868458891 has 16 divisors (see below), whose sum is σ = 17582872608. Its totient is φ = 8366662400.

The previous prime is 12868458881. The next prime is 12868458901. The reversal of 12868458891 is 19885486821.

It is an interprime number because it is at equal distance from previous prime (12868458881) and next prime (12868458901).

It is a cyclic number.

It is not a de Polignac number, because 12868458891 - 2¹⁰ = 12868457867 is a prime.

It is a super-3 number, since 3×12868458891³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12868458851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346021 + ... + 381401.

It is an arithmetic number, because the mean of its divisors is an integer number (1098929538).

Almost surely, 2^12868458891 is an apocalyptic number.

12868458891 is a deficient number, since it is larger than the sum of its proper divisors (4714413717).

12868458891 is a wasteful number, since it uses less digits than its factorization.

12868458891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38382.

The product of its digits is 8847360, while the sum is 60.

The spelling of 12868458891 in words is "twelve billion, eight hundred sixty-eight million, four hundred fifty-eight thousand, eight hundred ninety-one".