18666852050 has 48 divisors (see below), whose sum is σ = 43287711552. Its totient is φ = 5818238400.

The previous prime is 18666852047. The next prime is 18666852073. The reversal of 18666852050 is 5025866681.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18666851986 and 18666852004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2420417 + ... + 2428116.

It is an arithmetic number, because the mean of its divisors is an integer number (901827324).

Almost surely, 2^18666852050 is an apocalyptic number.

18666852050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18666852050 is an abundant number, since it is smaller than the sum of its proper divisors (24620859502).

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

18666852050 is a wasteful number, since it uses less digits than its factorization.

18666852050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848563 (or 4848558 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 18666852050 in words is "eighteen billion, six hundred sixty-six million, eight hundred fifty-two thousand, fifty".