40073631609 has 16 divisors (see below), whose sum is σ = 59710601664. Its totient is φ = 23694681600.

The previous prime is 40073631581. The next prime is 40073631613. The reversal of 40073631609 is 90613637004.

40073631609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40073631609 - 2¹⁵ = 40073598841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40073631629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14807824 + ... + 14810529.

It is an arithmetic number, because the mean of its divisors is an integer number (3731912604).

Almost surely, 2^40073631609 is an apocalyptic number.

It is an amenable number.

40073631609 is a deficient number, since it is larger than the sum of its proper divisors (19636970055).

40073631609 is a wasteful number, since it uses less digits than its factorization.

40073631609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29618408.

The product of its (nonzero) digits is 81648, while the sum is 39.

The spelling of 40073631609 in words is "forty billion, seventy-three million, six hundred thirty-one thousand, six hundred nine".