40766445173 has 2 divisors, whose sum is σ = 40766445174. Its totient is φ = 40766445172.

The previous prime is 40766445157. The next prime is 40766445301. The reversal of 40766445173 is 37154466704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38538793969 + 2227651204 = 196313^2 + 47198^2 .

It is a cyclic number.

It is not a de Polignac number, because 40766445173 - 2⁴ = 40766445157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40766445073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20383222586 + 20383222587.

It is an arithmetic number, because the mean of its divisors is an integer number (20383222587).

Almost surely, 2^40766445173 is an apocalyptic number.

It is an amenable number.

40766445173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40766445173 is an equidigital number, since it uses as much as digits as its factorization.

40766445173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 40766445173 in words is "forty billion, seven hundred sixty-six million, four hundred forty-five thousand, one hundred seventy-three".