181672464852 has 72 divisors (see below), whose sum is σ = 474373233152. Its totient is φ = 58563000000.

The previous prime is 181672464851. The next prime is 181672464859. The reversal of 181672464852 is 258464276181.

181672464852 is a `hidden beast` number, since 1 + 81 + 67 + 24 + 6 + 485 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181672464851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1558602 + ... + 1671102.

Almost surely, 2^181672464852 is an apocalyptic number.

181672464852 is a gapful number since it is divisible by the number (12) 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 181672464852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237186616576).

181672464852 is an abundant number, since it is smaller than the sum of its proper divisors (292700768300).

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

181672464852 is a wasteful number, since it uses less digits than its factorization.

181672464852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113989 (or 113984 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 181672464852 in words is "one hundred eighty-one billion, six hundred seventy-two million, four hundred sixty-four thousand, eight hundred fifty-two".