2665431642039 has 8 divisors (see below), whose sum is σ = 3636557899392. Its totient is φ = 1735629906360.

The previous prime is 2665431642037. The next prime is 2665431642077. The reversal of 2665431642039 is 9302461345662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2665431642039 - 2¹ = 2665431642037 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2665431641982 and 2665431642000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665431642031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10331130267 + ... + 10331130524.

It is an arithmetic number, because the mean of its divisors is an integer number (454569737424).

Almost surely, 2^{2665431642039} is an apocalyptic number.

2665431642039 is a deficient number, since it is larger than the sum of its proper divisors (971126257353).

2665431642039 is a wasteful number, since it uses less digits than its factorization.

2665431642039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20662260837.

The product of its (nonzero) digits is 5598720, while the sum is 51.

The spelling of 2665431642039 in words is "two trillion, six hundred sixty-five billion, four hundred thirty-one million, six hundred forty-two thousand, thirty-nine".