845018851840 has 160 divisors (see below), whose sum is σ = 2182357748736. Its totient is φ = 312881479680.

The previous prime is 845018851837. The next prime is 845018851861. The reversal of 845018851840 is 48158810548.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593804 + ... + 2056756.

Almost surely, 2^845018851840 is an apocalyptic number.

845018851840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845018851840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091178874368).

845018851840 is an abundant number, since it is smaller than the sum of its proper divisors (1337338896896).

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

845018851840 is a wasteful number, since it uses less digits than its factorization.

845018851840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463030 (or 463014 counting only the distinct ones).

The product of its (nonzero) digits is 1638400, while the sum is 52.

The spelling of 845018851840 in words is "eight hundred forty-five billion, eighteen million, eight hundred fifty-one thousand, eight hundred forty".