868428753805 has 16 divisors (see below), whose sum is σ = 1062789562800. Its totient is φ = 680984631808.

The previous prime is 868428753761. The next prime is 868428753817. The reversal of 868428753805 is 508357824868.

It can be written as a sum of positive squares in 8 ways, for example, as 6944055561 + 861484698244 = 83331^2 + 928162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868428753805 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1284022 + ... + 1839991.

It is an arithmetic number, because the mean of its divisors is an integer number (66424347675).

Almost surely, 2^868428753805 is an apocalyptic number.

It is an amenable number.

868428753805 is a deficient number, since it is larger than the sum of its proper divisors (194360808995).

868428753805 is a wasteful number, since it uses less digits than its factorization.

868428753805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125120.

The product of its (nonzero) digits is 103219200, while the sum is 64.

The spelling of 868428753805 in words is "eight hundred sixty-eight billion, four hundred twenty-eight million, seven hundred fifty-three thousand, eight hundred five".