845852136990 has 192 divisors, whose sum is σ = 2428700972544. Its totient is φ = 187880055552.

The previous prime is 845852136973. The next prime is 845852136991. The reversal of 845852136990 is 99631258548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845852136991) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12418407 + ... + 12486333.

It is an arithmetic number, because the mean of its divisors is an integer number (12649484232).

Almost surely, 2^845852136990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845852136990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1214350486272).

845852136990 is an abundant number, since it is smaller than the sum of its proper divisors (1582848835554).

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

845852136990 is a wasteful number, since it uses less digits than its factorization.

845852136990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68191 (or 68184 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 845852136990 in words is "eight hundred forty-five billion, eight hundred fifty-two million, one hundred thirty-six thousand, nine hundred ninety".