199261235106 has 48 divisors (see below), whose sum is σ = 435642714936. Its totient is φ = 65819109888.

The previous prime is 199261235053. The next prime is 199261235141. The reversal of 199261235106 is 601532162991.

199261235106 is a `hidden beast` number, since 1 + 9 + 9 + 2 + 6 + 123 + 510 + 6 = 666.

199261235106 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72571510881 + 126689724225 = 269391^2 + 355935^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16862056 + ... + 16873868.

Almost surely, 2^199261235106 is an apocalyptic number.

199261235106 is an abundant number, since it is smaller than the sum of its proper divisors (236381479830).

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

199261235106 is a wasteful number, since it uses less digits than its factorization.

199261235106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20227 (or 20224 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 199261235106 in words is "one hundred ninety-nine billion, two hundred sixty-one million, two hundred thirty-five thousand, one hundred six".