199216710061 has 2 divisors, whose sum is σ = 199216710062. Its totient is φ = 199216710060.

The previous prime is 199216709969. The next prime is 199216710071. The reversal of 199216710061 is 160017612991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192309437961 + 6907272100 = 438531^2 + 83110^2 .

It is a cyclic number.

It is not a de Polignac number, because 199216710061 - 2⁷ = 199216709933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199216710071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99608355030 + 99608355031.

It is an arithmetic number, because the mean of its divisors is an integer number (99608355031).

Almost surely, 2^199216710061 is an apocalyptic number.

It is an amenable number.

199216710061 is a deficient number, since it is larger than the sum of its proper divisors (1).

199216710061 is an equidigital number, since it uses as much as digits as its factorization.

199216710061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 199216710061 in words is "one hundred ninety-nine billion, two hundred sixteen million, seven hundred ten thousand, sixty-one".