186121038168 has 64 divisors (see below), whose sum is σ = 556772344800. Its totient is φ = 57268010880.

The previous prime is 186121038161. The next prime is 186121038203. The reversal of 186121038168 is 861830121681.

186121038168 is a `hidden beast` number, since 1 + 8 + 612 + 10 + 3 + 8 + 16 + 8 = 666.

It is a super-2 number, since 2×186121038168² (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 (186121038161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33138403 + ... + 33144018.

Almost surely, 2^186121038168 is an apocalyptic number.

186121038168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

186121038168 is an abundant number, since it is smaller than the sum of its proper divisors (370651306632).

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

186121038168 is a wasteful number, since it uses less digits than its factorization.

186121038168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66282449 (or 66282439 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 186121038168 in words is "one hundred eighty-six billion, one hundred twenty-one million, thirty-eight thousand, one hundred sixty-eight".