3661165161523 has 2 divisors, whose sum is σ = 3661165161524. Its totient is φ = 3661165161522.

The previous prime is 3661165161497. The next prime is 3661165161557. The reversal of 3661165161523 is 3251615611663.

It is a weak prime.

It is an emirp because it is prime and its reverse (3251615611663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3661165161523 - 2⁵ = 3661165161491 is a prime.

It is not a weakly prime, because it can be changed into another prime (3661165161583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830582580761 + 1830582580762.

It is an arithmetic number, because the mean of its divisors is an integer number (1830582580762).

Almost surely, 2^{3661165161523} is an apocalyptic number.

3661165161523 is a deficient number, since it is larger than the sum of its proper divisors (1).

3661165161523 is an equidigital number, since it uses as much as digits as its factorization.

3661165161523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The spelling of 3661165161523 in words is "three trillion, six hundred sixty-one billion, one hundred sixty-five million, one hundred sixty-one thousand, five hundred twenty-three".