855541749504 has 144 divisors (see below), whose sum is σ = 2466656276000. Its totient is φ = 263243096064.

The previous prime is 855541749449. The next prime is 855541749523. The reversal of 855541749504 is 405947145558.

It is a congruent number.

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, 1433772 + ... + 1940820.

Almost surely, 2^855541749504 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 855541749504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233328138000).

855541749504 is an abundant number, since it is smaller than the sum of its proper divisors (1611114526496).

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

855541749504 is an equidigital number, since it uses as much as digits as its factorization.

855541749504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507107 (or 507067 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 57.

The spelling of 855541749504 in words is "eight hundred fifty-five billion, five hundred forty-one million, seven hundred forty-nine thousand, five hundred four".