199428008087 has 8 divisors (see below), whose sum is σ = 248637516672. Its totient is φ = 155398447800.

The previous prime is 199428008041. The next prime is 199428008099. The reversal of 199428008087 is 780800824991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199428008087 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 (199428028087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294986989 + ... + 1294987142.

It is an arithmetic number, because the mean of its divisors is an integer number (31079689584).

Almost surely, 2^199428008087 is an apocalyptic number.

199428008087 is a deficient number, since it is larger than the sum of its proper divisors (49209508585).

199428008087 is a wasteful number, since it uses less digits than its factorization.

199428008087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589974149.

The product of its (nonzero) digits is 2322432, while the sum is 56.

The spelling of 199428008087 in words is "one hundred ninety-nine billion, four hundred twenty-eight million, eight thousand, eighty-seven".