2778676543 has 2 divisors, whose sum is σ = 2778676544. Its totient is φ = 2778676542.

The previous prime is 2778676517. The next prime is 2778676577. The reversal of 2778676543 is 3456768772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2778676543 - 2¹³ = 2778668351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2778616543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389338271 + 1389338272.

It is an arithmetic number, because the mean of its divisors is an integer number (1389338272).

Almost surely, 2^2778676543 is an apocalyptic number.

2778676543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778676543 is an equidigital number, since it uses as much as digits as its factorization.

2778676543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11854080, while the sum is 55.

The square root of 2778676543 is about 52713.1534154427. The cubic root of 2778676543 is about 1405.8727020772.

It can be divided in two parts, 27786 and 76543, that added together give a square (104329 = 323²).

The spelling of 2778676543 in words is "two billion, seven hundred seventy-eight million, six hundred seventy-six thousand, five hundred forty-three".