40166254616723 has 2 divisors, whose sum is σ = 40166254616724. Its totient is φ = 40166254616722.

The previous prime is 40166254616689. The next prime is 40166254616819. The reversal of 40166254616723 is 32761645266104.

40166254616723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40166254616723 - 2³⁰ = 40165180874899 is a prime.

It is a super-2 number, since 2×40166254616723² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40166254615723) 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, 20083127308361 + 20083127308362.

It is an arithmetic number, because the mean of its divisors is an integer number (20083127308362).

Almost surely, 2^{40166254616723} is an apocalyptic number.

40166254616723 is a deficient number, since it is larger than the sum of its proper divisors (1).

40166254616723 is an equidigital number, since it uses as much as digits as its factorization.

40166254616723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 40166254616723 in words is "forty trillion, one hundred sixty-six billion, two hundred fifty-four million, six hundred sixteen thousand, seven hundred twenty-three".