12366504615161 has 2 divisors, whose sum is σ = 12366504615162. Its totient is φ = 12366504615160.

The previous prime is 12366504615013. The next prime is 12366504615173. The reversal of 12366504615161 is 16151640566321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9936238752400 + 2430265862761 = 3152180^2 + 1558931^2 .

It is a cyclic number.

It is not a de Polignac number, because 12366504615161 - 2³⁰ = 12365430873337 is a prime.

It is a super-2 number, since 2×12366504615161² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12366504615181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6183252307580 + 6183252307581.

It is an arithmetic number, because the mean of its divisors is an integer number (6183252307581).

Almost surely, 2^{12366504615161} is an apocalyptic number.

It is an amenable number.

12366504615161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12366504615161 is an equidigital number, since it uses as much as digits as its factorization.

12366504615161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 12366504615161 in words is "twelve trillion, three hundred sixty-six billion, five hundred four million, six hundred fifteen thousand, one hundred sixty-one".