161660101199 has 2 divisors, whose sum is σ = 161660101200. Its totient is φ = 161660101198.

The previous prime is 161660101133. The next prime is 161660101237. The reversal of 161660101199 is 991101066161.

161660101199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161660101199 - 2³⁶ = 92940624463 is a prime.

It is a super-2 number, since 2×161660101199² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161660151199) by changing a digit.

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 as a sum of consecutive naturals, namely, 80830050599 + 80830050600.

It is an arithmetic number, because the mean of its divisors is an integer number (80830050600).

Almost surely, 2^161660101199 is an apocalyptic number.

161660101199 is a deficient number, since it is larger than the sum of its proper divisors (1).

161660101199 is an equidigital number, since it uses as much as digits as its factorization.

161660101199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 41.

The spelling of 161660101199 in words is "one hundred sixty-one billion, six hundred sixty million, one hundred one thousand, one hundred ninety-nine".