868428056139 has 8 divisors (see below), whose sum is σ = 1323318942720. Its totient is φ = 496244603496.

The previous prime is 868428056107. The next prime is 868428056149. The reversal of 868428056139 is 931650824868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 868428056139 - 2⁵ = 868428056107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868428056149) 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 7 ways as a sum of consecutive naturals, for example, 20676858459 + ... + 20676858500.

It is an arithmetic number, because the mean of its divisors is an integer number (165414867840).

Almost surely, 2^868428056139 is an apocalyptic number.

868428056139 is a deficient number, since it is larger than the sum of its proper divisors (454890886581).

868428056139 is a wasteful number, since it uses less digits than its factorization.

868428056139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41353716969.

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 868428056139 in words is "eight hundred sixty-eight billion, four hundred twenty-eight million, fifty-six thousand, one hundred thirty-nine".