864731249089 has 2 divisors, whose sum is σ = 864731249090. Its totient is φ = 864731249088.

The previous prime is 864731249087. The next prime is 864731249101. The reversal of 864731249089 is 980942137468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 839101800625 + 25629448464 = 916025^2 + 160092^2 .

It is a cyclic number.

It is not a de Polignac number, because 864731249089 - 2¹ = 864731249087 is a prime.

Together with 864731249087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (864731249087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432365624544 + 432365624545.

It is an arithmetic number, because the mean of its divisors is an integer number (432365624545).

Almost surely, 2^864731249089 is an apocalyptic number.

It is an amenable number.

864731249089 is a deficient number, since it is larger than the sum of its proper divisors (1).

864731249089 is an equidigital number, since it uses as much as digits as its factorization.

864731249089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 864731249089 in words is "eight hundred sixty-four billion, seven hundred thirty-one million, two hundred forty-nine thousand, eighty-nine".