2639855630489 has 64 divisors (see below), whose sum is σ = 3383646289920. Its totient is φ = 2000142305280.

The previous prime is 2639855630483. The next prime is 2639855630507. The reversal of 2639855630489 is 9840365589362.

It is not a de Polignac number, because 2639855630489 - 2⁴⁰ = 1540344002713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2639855630483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194429069 + ... + 194442645.

It is an arithmetic number, because the mean of its divisors is an integer number (52869473280).

Almost surely, 2^{2639855630489} is an apocalyptic number.

It is an amenable number.

2639855630489 is a deficient number, since it is larger than the sum of its proper divisors (743790659431).

2639855630489 is a wasteful number, since it uses less digits than its factorization.

2639855630489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14118.

The product of its (nonzero) digits is 335923200, while the sum is 68.

The spelling of 2639855630489 in words is "two trillion, six hundred thirty-nine billion, eight hundred fifty-five million, six hundred thirty thousand, four hundred eighty-nine".