864882763861 has 2 divisors, whose sum is σ = 864882763862. Its totient is φ = 864882763860.

The previous prime is 864882763853. The next prime is 864882763891. The reversal of 864882763861 is 168367288468.

864882763861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 860720062500 + 4162701361 = 927750^2 + 64519^2 .

It is a cyclic number.

It is not a de Polignac number, because 864882763861 - 2³ = 864882763853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864882763891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432441381930 + 432441381931.

It is an arithmetic number, because the mean of its divisors is an integer number (432441381931).

Almost surely, 2^864882763861 is an apocalyptic number.

It is an amenable number.

864882763861 is a deficient number, since it is larger than the sum of its proper divisors (1).

864882763861 is an equidigital number, since it uses as much as digits as its factorization.

864882763861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148635648, while the sum is 67.

The spelling of 864882763861 in words is "eight hundred sixty-four billion, eight hundred eighty-two million, seven hundred sixty-three thousand, eight hundred sixty-one".