868540745399 has 4 divisors (see below), whose sum is σ = 868542811800. Its totient is φ = 868538679000.

The previous prime is 868540745383. The next prime is 868540745467. The reversal of 868540745399 is 993547045868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868540745399 - 2⁴ = 868540745383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868540745339) 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 in 3 ways as a sum of consecutive naturals, for example, 152477 + ... + 1326774.

It is an arithmetic number, because the mean of its divisors is an integer number (217135702950).

Almost surely, 2^868540745399 is an apocalyptic number.

868540745399 is a deficient number, since it is larger than the sum of its proper divisors (2066401).

868540745399 is a wasteful number, since it uses less digits than its factorization.

868540745399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066400.

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 868540745399 in words is "eight hundred sixty-eight billion, five hundred forty million, seven hundred forty-five thousand, three hundred ninety-nine".