40989618705 has 64 divisors (see below), whose sum is σ = 78249443328. Its totient is φ = 17914659840.

The previous prime is 40989618701. The next prime is 40989618713. The reversal of 40989618705 is 50781698904.

It is not a de Polignac number, because 40989618705 - 2² = 40989618701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40989618701) 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 63 ways as a sum of consecutive naturals, for example, 8925960 + ... + 8930550.

It is an arithmetic number, because the mean of its divisors is an integer number (1222647552).

Almost surely, 2^40989618705 is an apocalyptic number.

It is an amenable number.

40989618705 is a deficient number, since it is larger than the sum of its proper divisors (37259824623).

40989618705 is a wasteful number, since it uses less digits than its factorization.

40989618705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8326.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 40989618705 in words is "forty billion, nine hundred eighty-nine million, six hundred eighteen thousand, seven hundred five".