183686866872 has 64 divisors (see below), whose sum is σ = 486754336800. Its totient is φ = 57565102080.

The previous prime is 183686866871. The next prime is 183686866927. The reversal of 183686866872 is 278668686381.

183686866872 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×183686866872² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 183686866797 and 183686866806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183686866871) 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 15 ways as a sum of consecutive naturals, for example, 136722 + ... + 621342.

Almost surely, 2^183686866872 is an apocalyptic number.

183686866872 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 183686866872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243377168400).

183686866872 is an abundant number, since it is smaller than the sum of its proper divisors (303067469928).

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

183686866872 is a wasteful number, since it uses less digits than its factorization.

183686866872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485576 (or 485572 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 69.

The spelling of 183686866872 in words is "one hundred eighty-three billion, six hundred eighty-six million, eight hundred sixty-six thousand, eight hundred seventy-two".