40166709696 has 84 divisors (see below), whose sum is σ = 115625130192. Its totient is φ = 13331395584.

The previous prime is 40166709673. The next prime is 40166709697. The reversal of 40166709696 is 69690766104.

40166709696 is a `hidden beast` number, since 401 + 6 + 67 + 0 + 96 + 96 = 666.

It is a super-2 number, since 2×40166709696² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166709697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15436 + ... + 283851.

Almost surely, 2^40166709696 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 40166709696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57812565096).

40166709696 is an abundant number, since it is smaller than the sum of its proper divisors (75458420496).

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

40166709696 is a wasteful number, since it uses less digits than its factorization.

40166709696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299538 (or 299525 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 40166709696 in words is "forty billion, one hundred sixty-six million, seven hundred nine thousand, six hundred ninety-six".