868345932647 has 2 divisors, whose sum is σ = 868345932648. Its totient is φ = 868345932646.

The previous prime is 868345932547. The next prime is 868345932677. The reversal of 868345932647 is 746239543868.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868345932647 - 2³⁴ = 851166063463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868345932677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434172966323 + 434172966324.

It is an arithmetic number, because the mean of its divisors is an integer number (434172966324).

Almost surely, 2^868345932647 is an apocalyptic number.

868345932647 is a deficient number, since it is larger than the sum of its proper divisors (1).

868345932647 is an equidigital number, since it uses as much as digits as its factorization.

868345932647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209018880, while the sum is 65.

The spelling of 868345932647 in words is "eight hundred sixty-eight billion, three hundred forty-five million, nine hundred thirty-two thousand, six hundred forty-seven".