845217456080 has 40 divisors (see below), whose sum is σ = 2032893714600. Its totient is φ = 326428809728.

The previous prime is 845217456077. The next prime is 845217456091. The reversal of 845217456080 is 80654712548.

It can be written as a sum of positive squares in 4 ways, for example, as 2500800064 + 842716656016 = 50008^2 + 917996^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182156615 + ... + 182161254.

It is an arithmetic number, because the mean of its divisors is an integer number (50822342865).

Almost surely, 2^845217456080 is an apocalyptic number.

845217456080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

845217456080 is an abundant number, since it is smaller than the sum of its proper divisors (1187676258520).

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

845217456080 is a wasteful number, since it uses less digits than its factorization.

845217456080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364317911 (or 364317905 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 845217456080 in words is "eight hundred forty-five billion, two hundred seventeen million, four hundred fifty-six thousand, eighty".