180294386666 has 4 divisors (see below), whose sum is σ = 270441580002. Its totient is φ = 90147193332.

The previous prime is 180294386653. The next prime is 180294386681. The reversal of 180294386666 is 666683492081.

It is a happy number.

180294386666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666683492081 = 36709 ⋅18161309.

It can be written as a sum of positive squares in only one way, i.e., 164637120025 + 15657266641 = 405755^2 + 125129^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45073596665 + ... + 45073596668.

Almost surely, 2^180294386666 is an apocalyptic number.

180294386666 is a deficient number, since it is larger than the sum of its proper divisors (90147193336).

180294386666 is an equidigital number, since it uses as much as digits as its factorization.

180294386666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90147193335.

The product of its (nonzero) digits is 17915904, while the sum is 59.

The spelling of 180294386666 in words is "one hundred eighty billion, two hundred ninety-four million, three hundred eighty-six thousand, six hundred sixty-six".