40166271847531 has 2 divisors, whose sum is σ = 40166271847532. Its totient is φ = 40166271847530.

The previous prime is 40166271847529. The next prime is 40166271847549. The reversal of 40166271847531 is 13574817266104.

40166271847531 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 40166271847531 - 2¹ = 40166271847529 is a prime.

It is a super-2 number, since 2×40166271847531² (a number of 28 digits) contains 22 as substring.

Together with 40166271847529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40166271847501) 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, 20083135923765 + 20083135923766.

It is an arithmetic number, because the mean of its divisors is an integer number (20083135923766).

Almost surely, 2^{40166271847531} is an apocalyptic number.

40166271847531 is a deficient number, since it is larger than the sum of its proper divisors (1).

40166271847531 is an equidigital number, since it uses as much as digits as its factorization.

40166271847531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 40166271847531 in words is "forty trillion, one hundred sixty-six billion, two hundred seventy-one million, eight hundred forty-seven thousand, five hundred thirty-one".