199076645506 has 8 divisors (see below), whose sum is σ = 308912036220. Its totient is φ = 96105966768.

The previous prime is 199076645503. The next prime is 199076645543. The reversal of 199076645506 is 605546670991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 199057853281 + 18792225 = 446159^2 + 4335^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 3432355957 = 199076645506 / (1 + 9 + 9 + 0 + 7 + 6 + 6 + 4 + 5 + 5 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (199076645501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716177921 + ... + 1716178036.

Almost surely, 2^199076645506 is an apocalyptic number.

199076645506 is a deficient number, since it is larger than the sum of its proper divisors (109835390714).

199076645506 is a wasteful number, since it uses less digits than its factorization.

199076645506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432355988.

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 199076645506 in words is "one hundred ninety-nine billion, seventy-six million, six hundred forty-five thousand, five hundred six".