845210613122 has 6 divisors (see below), whose sum is σ = 1267817869929. Its totient is φ = 422604656480.

The previous prime is 845210613101. The next prime is 845210613139. The reversal of 845210613122 is 221316012548.

It can be written as a sum of positive squares in 2 ways, for example, as 759074820001 + 86135793121 = 871249^2 + 293489^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=650081.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 975122 + ... + 1625202.

Almost surely, 2^845210613122 is an apocalyptic number.

845210613122 is a deficient number, since it is larger than the sum of its proper divisors (422607256807).

845210613122 is an frugal number, since it uses more digits than its factorization.

845210613122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300164 (or 650083 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 845210613122 in words is "eight hundred forty-five billion, two hundred ten million, six hundred thirteen thousand, one hundred twenty-two".