2779558783 has 2 divisors, whose sum is σ = 2779558784. Its totient is φ = 2779558782.

The previous prime is 2779558781. The next prime is 2779558841. The reversal of 2779558783 is 3878559772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2779558783 - 2¹ = 2779558781 is a prime.

Together with 2779558781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2779558781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389779391 + 1389779392.

It is an arithmetic number, because the mean of its divisors is an integer number (1389779392).

Almost surely, 2^2779558783 is an apocalyptic number.

2779558783 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779558783 is an equidigital number, since it uses as much as digits as its factorization.

2779558783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29635200, while the sum is 61.

The square root of 2779558783 is about 52721.5210611378. The cubic root of 2779558783 is about 1406.0214762470.

The spelling of 2779558783 in words is "two billion, seven hundred seventy-nine million, five hundred fifty-eight thousand, seven hundred eighty-three".