864647079434329 has 2 divisors, whose sum is σ = 864647079434330. Its totient is φ = 864647079434328.

The previous prime is 864647079434269. The next prime is 864647079434389. The reversal of 864647079434329 is 923434970746468.

It is a balanced prime because it is at equal distance from previous prime (864647079434269) and next prime (864647079434389).

It can be written as a sum of positive squares in only one way, i.e., 799858231515225 + 64788847919104 = 28281765^2 + 8049152^2 .

It is a cyclic number.

It is not a de Polignac number, because 864647079434329 - 2⁹ = 864647079433817 is a prime.

It is a super-2 number, since 2×864647079434329² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (864647079434389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432323539717164 + 432323539717165.

It is an arithmetic number, because the mean of its divisors is an integer number (432323539717165).

Almost surely, 2^{864647079434329} is an apocalyptic number.

It is an amenable number.

864647079434329 is a deficient number, since it is larger than the sum of its proper divisors (1).

864647079434329 is an equidigital number, since it uses as much as digits as its factorization.

864647079434329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5267275776, while the sum is 76.

The spelling of 864647079434329 in words is "eight hundred sixty-four trillion, six hundred forty-seven billion, seventy-nine million, four hundred thirty-four thousand, three hundred twenty-nine".