366666695568361 has 16 divisors (see below), whose sum is σ = 369348178687488. Its totient is φ = 363995832873600.

The previous prime is 366666695568353. The next prime is 366666695568379. The reversal of 366666695568361 is 163865596666663.

It is a cyclic number.

It is not a de Polignac number, because 366666695568361 - 2³ = 366666695568353 is a prime.

It is a super-2 number, since 2×366666695568361² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (366666695568301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118290285 + ... + 121350421.

It is an arithmetic number, because the mean of its divisors is an integer number (23084261167968).

Almost surely, 2^{366666695568361} is an apocalyptic number.

It is an amenable number.

366666695568361 is a deficient number, since it is larger than the sum of its proper divisors (2681483119127).

366666695568361 is a wasteful number, since it uses less digits than its factorization.

366666695568361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061872.

The product of its digits is 27209779200, while the sum is 82.

The spelling of 366666695568361 in words is "three hundred sixty-six trillion, six hundred sixty-six billion, six hundred ninety-five million, five hundred sixty-eight thousand, three hundred sixty-one".