83858922985838 has 64 divisors (see below), whose sum is σ = 172484117342208. Its totient is φ = 29517371205120.

The previous prime is 83858922985801. The next prime is 83858922985933.

It is a happy number.

83858922985838 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83858922985838.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 445518395 + ... + 445706582.

It is an arithmetic number, because the mean of its divisors is an integer number (2695064333472).

Almost surely, 2^{83858922985838} is an apocalyptic number.

83858922985838 is an abundant number, since it is smaller than the sum of its proper divisors (88625194356370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83858922985838 is a wasteful number, since it uses less digits than its factorization.

83858922985838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891225057.

The product of its digits is 19110297600, while the sum is 86.

The spelling of 83858922985838 in words is "eighty-three trillion, eight hundred fifty-eight billion, nine hundred twenty-two million, nine hundred eighty-five thousand, eight hundred thirty-eight".