366661117161 has 6 divisors (see below), whose sum is σ = 529621613690. Its totient is φ = 244440744768.

The previous prime is 366661117159. The next prime is 366661117247. The reversal of 366661117161 is 161711166663.

It can be written as a sum of positive squares in only one way, i.e., 266184796761 + 100476320400 = 515931^2 + 316980^2 .

It is not a de Polignac number, because 366661117161 - 2¹ = 366661117159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (366661117961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20370062056 + ... + 20370062073.

Almost surely, 2^366661117161 is an apocalyptic number.

It is an amenable number.

366661117161 is a deficient number, since it is larger than the sum of its proper divisors (162960496529).

366661117161 is a wasteful number, since it uses less digits than its factorization.

366661117161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40740124135 (or 40740124132 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The spelling of 366661117161 in words is "three hundred sixty-six billion, six hundred sixty-one million, one hundred seventeen thousand, one hundred sixty-one".