864769942417 has 2 divisors, whose sum is σ = 864769942418. Its totient is φ = 864769942416.

The previous prime is 864769942409. The next prime is 864769942429. The reversal of 864769942417 is 714249967468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466155755536 + 398614186881 = 682756^2 + 631359^2 .

It is a cyclic number.

It is not a de Polignac number, because 864769942417 - 2³ = 864769942409 is a prime.

It is not a weakly prime, because it can be changed into another prime (864769942717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432384971208 + 432384971209.

It is an arithmetic number, because the mean of its divisors is an integer number (432384971209).

Almost surely, 2^864769942417 is an apocalyptic number.

It is an amenable number.

864769942417 is a deficient number, since it is larger than the sum of its proper divisors (1).

864769942417 is an equidigital number, since it uses as much as digits as its factorization.

864769942417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216, while the sum is 67.

The spelling of 864769942417 in words is "eight hundred sixty-four billion, seven hundred sixty-nine million, nine hundred forty-two thousand, four hundred seventeen".