40838816329 has 4 divisors (see below), whose sum is σ = 40843661776. Its totient is φ = 40833970884.

The previous prime is 40838816327. The next prime is 40838816339. The reversal of 40838816329 is 92361883804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40838816329 - 2¹ = 40838816327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40838816327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2410059 + ... + 2426944.

It is an arithmetic number, because the mean of its divisors is an integer number (10210915444).

Almost surely, 2^40838816329 is an apocalyptic number.

It is an amenable number.

40838816329 is a deficient number, since it is larger than the sum of its proper divisors (4845447).

40838816329 is an equidigital number, since it uses as much as digits as its factorization.

40838816329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845446.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 40838816329 in words is "forty billion, eight hundred thirty-eight million, eight hundred sixteen thousand, three hundred twenty-nine".