845393487855 has 32 divisors (see below), whose sum is σ = 1546244755968. Its totient is φ = 386370000000.

The previous prime is 845393487833. The next prime is 845393487859. The reversal of 845393487855 is 558784393548.

It is not a de Polignac number, because 845393487855 - 2⁷ = 845393487727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845393487855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845393487859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568396 + ... + 1419105.

It is an arithmetic number, because the mean of its divisors is an integer number (48320148624).

Almost surely, 2^845393487855 is an apocalyptic number.

845393487855 is a deficient number, since it is larger than the sum of its proper divisors (700851268113).

845393487855 is a wasteful number, since it uses less digits than its factorization.

845393487855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991567.

The product of its digits is 580608000, while the sum is 69.

The spelling of 845393487855 in words is "eight hundred forty-five billion, three hundred ninety-three million, four hundred eighty-seven thousand, eight hundred fifty-five".