864882763891 has 2 divisors, whose sum is σ = 864882763892. Its totient is φ = 864882763890.

The previous prime is 864882763861. The next prime is 864882763903. The reversal of 864882763891 is 198367288468.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864882763891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864882763891.

It is not a weakly prime, because it can be changed into another prime (864882763861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432441381945 + 432441381946.

It is an arithmetic number, because the mean of its divisors is an integer number (432441381946).

Almost surely, 2^864882763891 is an apocalyptic number.

864882763891 is a deficient number, since it is larger than the sum of its proper divisors (1).

864882763891 is an equidigital number, since it uses as much as digits as its factorization.

864882763891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222953472, while the sum is 70.

The spelling of 864882763891 in words is "eight hundred sixty-four billion, eight hundred eighty-two million, seven hundred sixty-three thousand, eight hundred ninety-one".