199885066087 has 48 divisors (see below), whose sum is σ = 240140398080. Its totient is φ = 165795735168.

The previous prime is 199885066039. The next prime is 199885066133. The reversal of 199885066087 is 780660588991.

It is not a de Polignac number, because 199885066087 - 2²³ = 199876677479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199885076087) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140466658 + ... + 140468080.

It is an arithmetic number, because the mean of its divisors is an integer number (5002924960).

Almost surely, 2^199885066087 is an apocalyptic number.

199885066087 is a deficient number, since it is larger than the sum of its proper divisors (40255331993).

199885066087 is a wasteful number, since it uses less digits than its factorization.

199885066087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 2045 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 199885066087 in words is "one hundred ninety-nine billion, eight hundred eighty-five million, sixty-six thousand, eighty-seven".