868798393081 has 2 divisors, whose sum is σ = 868798393082. Its totient is φ = 868798393080.

The previous prime is 868798393049. The next prime is 868798393103. The reversal of 868798393081 is 180393897868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624757453056 + 244040940025 = 790416^2 + 494005^2 .

It is a cyclic number.

It is not a de Polignac number, because 868798393081 - 2⁵ = 868798393049 is a prime.

It is a super-2 number, since 2×868798393081² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 868798393081.

It is not a weakly prime, because it can be changed into another prime (868198393081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434399196540 + 434399196541.

It is an arithmetic number, because the mean of its divisors is an integer number (434399196541).

Almost surely, 2^868798393081 is an apocalyptic number.

It is an amenable number.

868798393081 is a deficient number, since it is larger than the sum of its proper divisors (1).

868798393081 is an equidigital number, since it uses as much as digits as its factorization.

868798393081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125411328, while the sum is 70.

The spelling of 868798393081 in words is "eight hundred sixty-eight billion, seven hundred ninety-eight million, three hundred ninety-three thousand, eighty-one".