20186835166850 has 48 divisors (see below), whose sum is σ = 41913503390880. Its totient is φ = 7169954131200.

The previous prime is 20186835166837. The next prime is 20186835166879. The reversal of 20186835166850 is 5866153868102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20186835166850.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 426759335 + ... + 426806634.

It is an arithmetic number, because the mean of its divisors is an integer number (873197987310).

Almost surely, 2^{20186835166850} is an apocalyptic number.

20186835166850 is an abundant number, since it is smaller than the sum of its proper divisors (21726668224030).

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

20186835166850 is a wasteful number, since it uses less digits than its factorization.

20186835166850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853566035 (or 853566030 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 59.

The spelling of 20186835166850 in words is "twenty trillion, one hundred eighty-six billion, eight hundred thirty-five million, one hundred sixty-six thousand, eight hundred fifty".