199206328061 has 24 divisors (see below), whose sum is σ = 218544448680. Its totient is φ = 181473177600.

The previous prime is 199206327989. The next prime is 199206328091. The reversal of 199206328061 is 160823602991.

It can be written as a sum of positive squares in 12 ways, for example, as 189124963225 + 10081364836 = 434885^2 + 100406^2 .

It is not a de Polignac number, because 199206328061 - 2³⁰ = 198132586237 is a prime.

It is a super-2 number, since 2×199206328061² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199206327997 and 199206328015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199206328091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8124941 + ... + 8149421.

It is an arithmetic number, because the mean of its divisors is an integer number (9106018695).

Almost surely, 2^199206328061 is an apocalyptic number.

It is an amenable number.

199206328061 is a deficient number, since it is larger than the sum of its proper divisors (19338120619).

199206328061 is a wasteful number, since it uses less digits than its factorization.

199206328061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25137 (or 25124 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 199206328061 in words is "one hundred ninety-nine billion, two hundred six million, three hundred twenty-eight thousand, sixty-one".