199632027205 has 16 divisors (see below), whose sum is σ = 258131334384. Its totient is φ = 147337528320.

The previous prime is 199632027173. The next prime is 199632027209. The reversal of 199632027205 is 502720236991.

It is a Cunningham number, because it is equal to 446802²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 27996651684 + 171635375521 = 167322^2 + 414289^2 .

It is not a de Polignac number, because 199632027205 - 2⁵ = 199632027173 is a prime.

It is a super-2 number, since 2×199632027205² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199632027209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748666 + ... + 979675.

It is an arithmetic number, because the mean of its divisors is an integer number (16133208399).

Almost surely, 2^199632027205 is an apocalyptic number.

It is an amenable number.

199632027205 is a deficient number, since it is larger than the sum of its proper divisors (58499307179).

199632027205 is a wasteful number, since it uses less digits than its factorization.

199632027205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730136.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 199632027205 in words is "one hundred ninety-nine billion, six hundred thirty-two million, twenty-seven thousand, two hundred five".