845464439140 has 12 divisors (see below), whose sum is σ = 1775475322236. Its totient is φ = 338185775648.

The previous prime is 845464439129. The next prime is 845464439161. The reversal of 845464439140 is 41934464548.

It can be written as a sum of positive squares in 2 ways, for example, as 319749535296 + 525714903844 = 565464^2 + 725062^2 .

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 3 ways as a sum of consecutive naturals, for example, 21136610959 + ... + 21136610998.

It is an arithmetic number, because the mean of its divisors is an integer number (147956276853).

Almost surely, 2^845464439140 is an apocalyptic number.

It is an amenable number.

845464439140 is an abundant number, since it is smaller than the sum of its proper divisors (930010883096).

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

845464439140 is a wasteful number, since it uses less digits than its factorization.

845464439140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42273221966 (or 42273221964 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 52.

The spelling of 845464439140 in words is "eight hundred forty-five billion, four hundred sixty-four million, four hundred thirty-nine thousand, one hundred forty".