40766640133 has 2 divisors, whose sum is σ = 40766640134. Its totient is φ = 40766640132.

The previous prime is 40766640127. The next prime is 40766640221. The reversal of 40766640133 is 33104666704.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36063149409 + 4703490724 = 189903^2 + 68582^2 .

It is a cyclic number.

It is not a de Polignac number, because 40766640133 - 2¹⁷ = 40766509061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40766640113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20383320066 + 20383320067.

It is an arithmetic number, because the mean of its divisors is an integer number (20383320067).

Almost surely, 2^40766640133 is an apocalyptic number.

It is an amenable number.

40766640133 is a deficient number, since it is larger than the sum of its proper divisors (1).

40766640133 is an equidigital number, since it uses as much as digits as its factorization.

40766640133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 40766640133 in words is "forty billion, seven hundred sixty-six million, six hundred forty thousand, one hundred thirty-three".