845287817136 has 40 divisors (see below), whose sum is σ = 2495611651584. Its totient is φ = 241510804800.

The previous prime is 845287817111. The next prime is 845287817149. The reversal of 845287817136 is 631718782548.

It is a super-2 number, since 2×845287817136² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 845287817136.

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, 1257868440 + ... + 1257869111.

Almost surely, 2^845287817136 is an apocalyptic number.

It is an amenable number.

845287817136 is an abundant number, since it is smaller than the sum of its proper divisors (1650323834448).

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

845287817136 is a wasteful number, since it uses less digits than its factorization.

845287817136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515737569 (or 2515737563 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 60.

The spelling of 845287817136 in words is "eight hundred forty-five billion, two hundred eighty-seven million, eight hundred seventeen thousand, one hundred thirty-six".