845855504578 has 128 divisors (see below), whose sum is σ = 1604131651584. Its totient is φ = 326546035200.

The previous prime is 845855504521. The next prime is 845855504579. The reversal of 845855504578 is 875405558548.

It is not an unprimeable number, because it can be changed into a prime (845855504579) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 120609000 + ... + 120616012.

It is an arithmetic number, because the mean of its divisors is an integer number (12532278528).

Almost surely, 2^845855504578 is an apocalyptic number.

845855504578 is a deficient number, since it is larger than the sum of its proper divisors (758276147006).

845855504578 is a wasteful number, since it uses less digits than its factorization.

845855504578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400.

The product of its (nonzero) digits is 179200000, while the sum is 64.

The spelling of 845855504578 in words is "eight hundred forty-five billion, eight hundred fifty-five million, five hundred four thousand, five hundred seventy-eight".