850988022791 has 16 divisors (see below), whose sum is σ = 894089608800. Its totient is φ = 808820546688.

The previous prime is 850988022769. The next prime is 850988022793. The reversal of 850988022791 is 197220889058.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850988022791 is a prime.

It is a super-2 number, since 2×850988022791² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 850988022791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850988022793) by changing a digit.

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, 2672465 + ... + 2973893.

It is an arithmetic number, because the mean of its divisors is an integer number (55880600550).

Almost surely, 2^850988022791 is an apocalyptic number.

850988022791 is a deficient number, since it is larger than the sum of its proper divisors (43101586009).

850988022791 is a wasteful number, since it uses less digits than its factorization.

850988022791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302978.

The product of its (nonzero) digits is 5806080, while the sum is 59.

The spelling of 850988022791 in words is "eight hundred fifty billion, nine hundred eighty-eight million, twenty-two thousand, seven hundred ninety-one".