181074853680 has 160 divisors (see below), whose sum is σ = 643908787200. Its totient is φ = 41234574336.

The previous prime is 181074853679. The next prime is 181074853681. The reversal of 181074853680 is 86358470181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (181074853679) and next prime (181074853681).

It is not an unprimeable number, because it can be changed into a prime (181074853681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251581 + ... + 652259.

It is an arithmetic number, because the mean of its divisors is an integer number (4024429920).

Almost surely, 2^181074853680 is an apocalyptic number.

181074853680 is a gapful number since it is divisible by the number (10) 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 181074853680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321954393600).

181074853680 is an abundant number, since it is smaller than the sum of its proper divisors (462833933520).

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

181074853680 is a wasteful number, since it uses less digits than its factorization.

181074853680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400971 (or 400965 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 181074853680 in words is "one hundred eighty-one billion, seventy-four million, eight hundred fifty-three thousand, six hundred eighty".