40166483813 has 2 divisors, whose sum is σ = 40166483814. Its totient is φ = 40166483812.

The previous prime is 40166483809. The next prime is 40166483827. The reversal of 40166483813 is 31838466104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31720322404 + 8446161409 = 178102^2 + 91903^2 .

It is a cyclic number.

It is not a de Polignac number, because 40166483813 - 2² = 40166483809 is a prime.

It is a super-2 number, since 2×40166483813² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40166483893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20083241906 + 20083241907.

It is an arithmetic number, because the mean of its divisors is an integer number (20083241907).

Almost surely, 2^40166483813 is an apocalyptic number.

It is an amenable number.

40166483813 is a deficient number, since it is larger than the sum of its proper divisors (1).

40166483813 is an equidigital number, since it uses as much as digits as its factorization.

40166483813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 40166483813 in words is "forty billion, one hundred sixty-six million, four hundred eighty-three thousand, eight hundred thirteen".