2605909788799 has 4 divisors (see below), whose sum is σ = 2620972851336. Its totient is φ = 2590846726264.

The previous prime is 2605909788707. The next prime is 2605909788803. The reversal of 2605909788799 is 9978879095062.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2605909788799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605909788199) 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, 7531531009 + ... + 7531531354.

It is an arithmetic number, because the mean of its divisors is an integer number (655243212834).

Almost surely, 2^{2605909788799} is an apocalyptic number.

2605909788799 is a deficient number, since it is larger than the sum of its proper divisors (15063062537).

2605909788799 is a wasteful number, since it uses less digits than its factorization.

2605909788799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15063062536.

The product of its (nonzero) digits is 1234517760, while the sum is 79.

The spelling of 2605909788799 in words is "two trillion, six hundred five billion, nine hundred nine million, seven hundred eighty-eight thousand, seven hundred ninety-nine".