40669367509 has 4 divisors (see below), whose sum is σ = 40671371020. Its totient is φ = 40667364000.

The previous prime is 40669367447. The next prime is 40669367567. The reversal of 40669367509 is 90576396604.

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 12898144900 + 27771222609 = 113570^2 + 166647^2 .

It is a cyclic number.

It is not a de Polignac number, because 40669367509 - 2¹⁹ = 40668843221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40669367509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40669367009) 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, 970992 + ... + 1012009.

It is an arithmetic number, because the mean of its divisors is an integer number (10167842755).

Almost surely, 2^40669367509 is an apocalyptic number.

It is an amenable number.

40669367509 is a deficient number, since it is larger than the sum of its proper divisors (2003511).

40669367509 is a wasteful number, since it uses less digits than its factorization.

40669367509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003510.

The product of its (nonzero) digits is 7348320, while the sum is 55.

The spelling of 40669367509 in words is "forty billion, six hundred sixty-nine million, three hundred sixty-seven thousand, five hundred nine".