40615634309 has 4 divisors (see below), whose sum is σ = 40635419916. Its totient is φ = 40595848704.

The previous prime is 40615634251. The next prime is 40615634317. The reversal of 40615634309 is 90343651604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34327937284 + 6287697025 = 185278^2 + 79295^2 .

It is a cyclic number.

It is not a de Polignac number, because 40615634309 - 2⁸ = 40615634053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40615634329) 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 3 ways as a sum of consecutive naturals, for example, 9889724 + ... + 9893829.

It is an arithmetic number, because the mean of its divisors is an integer number (10158854979).

Almost surely, 2^40615634309 is an apocalyptic number.

It is an amenable number.

40615634309 is a deficient number, since it is larger than the sum of its proper divisors (19785607).

40615634309 is a wasteful number, since it uses less digits than its factorization.

40615634309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19785606.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 40615634309 in words is "forty billion, six hundred fifteen million, six hundred thirty-four thousand, three hundred nine".