826805968138 has 8 divisors (see below), whose sum is σ = 1240404003360. Its totient is φ = 413337967020.

The previous prime is 826805968081. The next prime is 826805968141. The reversal of 826805968138 is 831869508628.

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

It is a self number, because there is not a number n which added to its sum of digits gives 826805968138.

It is an unprimeable number.

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, 32492628 + ... + 32518063.

It is an arithmetic number, because the mean of its divisors is an integer number (155050500420).

Almost surely, 2^826805968138 is an apocalyptic number.

826805968138 is a deficient number, since it is larger than the sum of its proper divisors (413598035222).

826805968138 is a wasteful number, since it uses less digits than its factorization.

826805968138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65017052.

The product of its (nonzero) digits is 39813120, while the sum is 64.

The spelling of 826805968138 in words is "eight hundred twenty-six billion, eight hundred five million, nine hundred sixty-eight thousand, one hundred thirty-eight".