186331166428213 has 8 divisors (see below), whose sum is σ = 191766556019808. Its totient is φ = 180945872593584.

The previous prime is 186331166428181. The next prime is 186331166428241. The reversal of 186331166428213 is 312824661133681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 186331166428213 - 2⁵ = 186331166428181 is a prime.

It is a super-2 number, since 2×186331166428213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186331166428013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12523931695 + ... + 12523946572.

It is an arithmetic number, because the mean of its divisors is an integer number (23970819502476).

Almost surely, 2^{186331166428213} is an apocalyptic number.

It is an amenable number.

186331166428213 is a deficient number, since it is larger than the sum of its proper divisors (5435389591595).

186331166428213 is a wasteful number, since it uses less digits than its factorization.

186331166428213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25047878483.

The product of its digits is 5971968, while the sum is 55.

The spelling of 186331166428213 in words is "one hundred eighty-six trillion, three hundred thirty-one billion, one hundred sixty-six million, four hundred twenty-eight thousand, two hundred thirteen".