845506427788 has 18 divisors (see below), whose sum is σ = 1626377034548. Its totient is φ = 384321103320.

The previous prime is 845506427741. The next prime is 845506427789. The reversal of 845506427788 is 887724605548.

It is a super-2 number, since 2×845506427788² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (845506427789) 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 5 ways as a sum of consecutive naturals, for example, 873456570 + ... + 873457537.

Almost surely, 2^845506427788 is an apocalyptic number.

It is an amenable number.

845506427788 is a deficient number, since it is larger than the sum of its proper divisors (780870606760).

845506427788 is a wasteful number, since it uses less digits than its factorization.

845506427788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746914133 (or 1746914120 counting only the distinct ones).

The product of its (nonzero) digits is 120422400, while the sum is 64.

The spelling of 845506427788 in words is "eight hundred forty-five billion, five hundred six million, four hundred twenty-seven thousand, seven hundred eighty-eight".