40208868688 has 20 divisors (see below), whose sum is σ = 78382631008. Its totient is φ = 19981092960.

The previous prime is 40208868631. The next prime is 40208868701. The reversal of 40208868688 is 88686880204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7706148 + ... + 7711363.

Almost surely, 2^40208868688 is an apocalyptic number.

It is an amenable number.

40208868688 is a deficient number, since it is larger than the sum of its proper divisors (38173762320).

40208868688 is a wasteful number, since it uses less digits than its factorization.

40208868688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15417682 (or 15417676 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 58.

The spelling of 40208868688 in words is "forty billion, two hundred eight million, eight hundred sixty-eight thousand, six hundred eighty-eight".