2788808905643 has 2 divisors, whose sum is σ = 2788808905644. Its totient is φ = 2788808905642.

The previous prime is 2788808905637. The next prime is 2788808905669. The reversal of 2788808905643 is 3465098088872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2788808905643 - 2²² = 2788804711339 is a prime.

It is a super-2 number, since 2×2788808905643² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2788808902643) 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 as a sum of consecutive naturals, namely, 1394404452821 + 1394404452822.

It is an arithmetic number, because the mean of its divisors is an integer number (1394404452822).

Almost surely, 2^{2788808905643} is an apocalyptic number.

2788808905643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2788808905643 is an equidigital number, since it uses as much as digits as its factorization.

2788808905643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185794560, while the sum is 68.

The spelling of 2788808905643 in words is "two trillion, seven hundred eighty-eight billion, eight hundred eight million, nine hundred five thousand, six hundred forty-three".