40664204694 has 12 divisors (see below), whose sum is σ = 88105776876. Its totient is φ = 13554734892.

The previous prime is 40664204689. The next prime is 40664204717. The reversal of 40664204694 is 49640246604.

40664204694 is a `hidden beast` number, since 40 + 66 + 420 + 46 + 94 = 666.

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 5 ways as a sum of consecutive naturals, for example, 1129561224 + ... + 1129561259.

It is an arithmetic number, because the mean of its divisors is an integer number (7342148073).

Almost surely, 2^40664204694 is an apocalyptic number.

40664204694 is an abundant number, since it is smaller than the sum of its proper divisors (47441572182).

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

40664204694 is a wasteful number, since it uses less digits than its factorization.

40664204694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259122491 (or 2259122488 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The spelling of 40664204694 in words is "forty billion, six hundred sixty-four million, two hundred four thousand, six hundred ninety-four".