181660010612 has 24 divisors (see below), whose sum is σ = 320154401280. Its totient is φ = 90189066240.

The previous prime is 181660010611. The next prime is 181660010627. The reversal of 181660010612 is 216010066181.

181660010612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×181660010612² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181660010611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200564 + ... + 635252.

It is an arithmetic number, because the mean of its divisors is an integer number (13339766720).

Almost surely, 2^181660010612 is an apocalyptic number.

It is an amenable number.

181660010612 is a deficient number, since it is larger than the sum of its proper divisors (138494390668).

181660010612 is a wasteful number, since it uses less digits than its factorization.

181660010612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435431 (or 435429 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

Adding to 181660010612 its reverse (216010066181), we get a palindrome (397670076793).

The spelling of 181660010612 in words is "one hundred eighty-one billion, six hundred sixty million, ten thousand, six hundred twelve".