850465812309 has 16 divisors (see below), whose sum is σ = 1179134328000. Its totient is φ = 544589853696.

The previous prime is 850465812293. The next prime is 850465812341. The reversal of 850465812309 is 903218564058.

It is not a de Polignac number, because 850465812309 - 2⁴ = 850465812293 is a prime.

It is a super-2 number, since 2×850465812309² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850465812349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25308259 + ... + 25341840.

It is an arithmetic number, because the mean of its divisors is an integer number (73695895500).

Almost surely, 2^850465812309 is an apocalyptic number.

It is an amenable number.

850465812309 is a deficient number, since it is larger than the sum of its proper divisors (328668515691).

850465812309 is a wasteful number, since it uses less digits than its factorization.

850465812309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50650324.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 850465812309 in words is "eight hundred fifty billion, four hundred sixty-five million, eight hundred twelve thousand, three hundred nine".