12067170161661 has 12 divisors (see below), whose sum is σ = 17430388600092. Its totient is φ = 8044765477056.

The previous prime is 12067170161659. The next prime is 12067170161671. The reversal of 12067170161661 is 16616107176021.

12067170161661 is a `hidden beast` number, since 1 + 20 + 6 + 7 + 1 + 7 + 0 + 1 + 616 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8426683265625 + 3640486896036 = 2902875^2 + 1908006^2 .

It is not a de Polignac number, because 12067170161661 - 2¹ = 12067170161659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12067170161611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6736995 + ... + 8337951.

It is an arithmetic number, because the mean of its divisors is an integer number (1452532383341).

Almost surely, 2^{12067170161661} is an apocalyptic number.

It is an amenable number.

12067170161661 is a deficient number, since it is larger than the sum of its proper divisors (5363218438431).

12067170161661 is a wasteful number, since it uses less digits than its factorization.

12067170161661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438460 (or 2438457 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 12067170161661 in words is "twelve trillion, sixty-seven billion, one hundred seventy million, one hundred sixty-one thousand, six hundred sixty-one".