185587166142 has 192 divisors, whose sum is σ = 505836624384. Its totient is φ = 49783818240.

The previous prime is 185587166117. The next prime is 185587166183. The reversal of 185587166142 is 241661785581.

185587166142 is a `hidden beast` number, since 1 + 8 + 5 + 5 + 8 + 7 + 16 + 614 + 2 = 666.

It is a super-2 number, since 2×185587166142² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25038417 + ... + 25045827.

It is an arithmetic number, because the mean of its divisors is an integer number (2634565752).

Almost surely, 2^185587166142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 185587166142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252918312192).

185587166142 is an abundant number, since it is smaller than the sum of its proper divisors (320249458242).

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

185587166142 is a wasteful number, since it uses less digits than its factorization.

185587166142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7885 (or 7873 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 185587166142 in words is "one hundred eighty-five billion, five hundred eighty-seven million, one hundred sixty-six thousand, one hundred forty-two".