40166271844688 has 80 divisors (see below), whose sum is σ = 85680828129600. Its totient is φ = 18088827863040.

The previous prime is 40166271844661. The next prime is 40166271844691. The reversal of 40166271844688 is 88644817266104.

It is a super-2 number, since 2×40166271844688² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387829520 + ... + 387933072.

It is an arithmetic number, because the mean of its divisors is an integer number (1071010351620).

Almost surely, 2^{40166271844688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40166271844688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42840414064800).

40166271844688 is an abundant number, since it is smaller than the sum of its proper divisors (45514556284912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40166271844688 is a wasteful number, since it uses less digits than its factorization.

40166271844688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123900 (or 123894 counting only the distinct ones).

The product of its (nonzero) digits is 99090432, while the sum is 65.

The spelling of 40166271844688 in words is "forty trillion, one hundred sixty-six billion, two hundred seventy-one million, eight hundred forty-four thousand, six hundred eighty-eight".