40208868689 has 8 divisors (see below), whose sum is σ = 43976986560. Its totient is φ = 36459545200.

The previous prime is 40208868631. The next prime is 40208868701. The reversal of 40208868689 is 98686880204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40208868689 - 2¹⁶ = 40208803153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40208868989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4694117 + ... + 4702674.

It is an arithmetic number, because the mean of its divisors is an integer number (5497123320).

Almost surely, 2^40208868689 is an apocalyptic number.

It is an amenable number.

40208868689 is a deficient number, since it is larger than the sum of its proper divisors (3768117871).

40208868689 is a wasteful number, since it uses less digits than its factorization.

40208868689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9397191.

The product of its (nonzero) digits is 10616832, while the sum is 59.

The spelling of 40208868689 in words is "forty billion, two hundred eight million, eight hundred sixty-eight thousand, six hundred eighty-nine".