845557318923 has 16 divisors (see below), whose sum is σ = 1210541054976. Its totient is φ = 523073290880.

The previous prime is 845557318909. The next prime is 845557318951. The reversal of 845557318923 is 329813755548.

It is a cyclic number.

It is not a de Polignac number, because 845557318923 - 2¹² = 845557314827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (845557318423) 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 15 ways as a sum of consecutive naturals, for example, 116753811 + ... + 116761052.

It is an arithmetic number, because the mean of its divisors is an integer number (75658815936).

Almost surely, 2^845557318923 is an apocalyptic number.

845557318923 is a deficient number, since it is larger than the sum of its proper divisors (364983736053).

845557318923 is a wasteful number, since it uses less digits than its factorization.

845557318923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233514954.

The product of its digits is 36288000, while the sum is 60.

The spelling of 845557318923 in words is "eight hundred forty-five billion, five hundred fifty-seven million, three hundred eighteen thousand, nine hundred twenty-three".