40166794866 has 32 divisors (see below), whose sum is σ = 87778310400. Its totient is φ = 12152080080.

The previous prime is 40166794861. The next prime is 40166794919. The reversal of 40166794866 is 66849766104.

It is a super-2 number, since 2×40166794866² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40166794861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450736 + ... + 532443.

It is an arithmetic number, because the mean of its divisors is an integer number (2743072200).

Almost surely, 2^40166794866 is an apocalyptic number.

40166794866 is an abundant number, since it is smaller than the sum of its proper divisors (47611515534).

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

40166794866 is a wasteful number, since it uses less digits than its factorization.

40166794866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983814.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 40166794866 in words is "forty billion, one hundred sixty-six million, seven hundred ninety-four thousand, eight hundred sixty-six".