866802147274291 has 2 divisors, whose sum is σ = 866802147274292. Its totient is φ = 866802147274290.

The previous prime is 866802147274211. The next prime is 866802147274387. The reversal of 866802147274291 is 192472741208668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866802147274291 - 2¹⁹ = 866802146750003 is a prime.

It is not a weakly prime, because it can be changed into another prime (866802147274211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433401073637145 + 433401073637146.

It is an arithmetic number, because the mean of its divisors is an integer number (433401073637146).

Almost surely, 2^{866802147274291} is an apocalyptic number.

866802147274291 is a deficient number, since it is larger than the sum of its proper divisors (1).

866802147274291 is an equidigital number, since it uses as much as digits as its factorization.

866802147274291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 130056192, while the sum is 67.

The spelling of 866802147274291 in words is "eight hundred sixty-six trillion, eight hundred two billion, one hundred forty-seven million, two hundred seventy-four thousand, two hundred ninety-one".