850009391952 has 120 divisors (see below), whose sum is σ = 2642446720800. Its totient is φ = 234485330688.

The previous prime is 850009391947. The next prime is 850009391983. The reversal of 850009391952 is 259193900058.

It is a junction number, because it is equal to n+sod(n) for n = 850009391895 and 850009391904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6162802 + ... + 6299217.

It is an arithmetic number, because the mean of its divisors is an integer number (22020389340).

Almost surely, 2^850009391952 is an apocalyptic number.

It is an amenable number.

850009391952 is an abundant number, since it is smaller than the sum of its proper divisors (1792437328848).

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

850009391952 is a wasteful number, since it uses less digits than its factorization.

850009391952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12462073 (or 12462060 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 850009391952 in words is "eight hundred fifty billion, nine million, three hundred ninety-one thousand, nine hundred fifty-two".