850850918478 has 24 divisors (see below), whose sum is σ = 2011102171416. Its totient is φ = 257833611600.

The previous prime is 850850918473. The next prime is 850850918479. The reversal of 850850918478 is 874819058058.

850850918478 is a `hidden beast` number, since 8 + 50 + 8 + 509 + 1 + 8 + 4 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850850918473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2148613233 + ... + 2148613628.

It is an arithmetic number, because the mean of its divisors is an integer number (83795923809).

Almost surely, 2^850850918478 is an apocalyptic number.

850850918478 is an abundant number, since it is smaller than the sum of its proper divisors (1160251252938).

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

850850918478 is a wasteful number, since it uses less digits than its factorization.

850850918478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297226880 (or 4297226877 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 63.

The spelling of 850850918478 in words is "eight hundred fifty billion, eight hundred fifty million, nine hundred eighteen thousand, four hundred seventy-eight".