133790666666 has 8 divisors (see below), whose sum is σ = 202672990404. Its totient is φ = 66233003200.

The previous prime is 133790666657. The next prime is 133790666683. The reversal of 133790666666 is 666666097331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102947931025 + 30842735641 = 320855^2 + 175621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

133790666666 is a modest number, since divided by 666666 gives 133790 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331164815 + ... + 331165218.

Almost surely, 2^133790666666 is an apocalyptic number.

133790666666 is a deficient number, since it is larger than the sum of its proper divisors (68882323738).

133790666666 is a wasteful number, since it uses less digits than its factorization.

133790666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662330136.

The product of its (nonzero) digits is 26453952, while the sum is 59.

The spelling of 133790666666 in words is "one hundred thirty-three billion, seven hundred ninety million, six hundred sixty-six thousand, six hundred sixty-six".