845437274836 has 144 divisors (see below), whose sum is σ = 1944816993280. Its totient is φ = 314396121600.

The previous prime is 845437274831. The next prime is 845437274873. The reversal of 845437274836 is 638472734548.

It is a super-3 number, since 3×845437274836³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845437274831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7611910 + ... + 7722178.

Almost surely, 2^845437274836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845437274836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972408496640).

845437274836 is an abundant number, since it is smaller than the sum of its proper divisors (1099379718444).

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

845437274836 is a wasteful number, since it uses less digits than its factorization.

845437274836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110406 (or 110393 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 61.

The spelling of 845437274836 in words is "eight hundred forty-five billion, four hundred thirty-seven million, two hundred seventy-four thousand, eight hundred thirty-six".