2851566726979 has 2 divisors, whose sum is σ = 2851566726980. Its totient is φ = 2851566726978.

The previous prime is 2851566726977. The next prime is 2851566727091. The reversal of 2851566726979 is 9796276651582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2851566726979 - 2¹ = 2851566726977 is a prime.

Together with 2851566726977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2851566726977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425783363489 + 1425783363490.

It is an arithmetic number, because the mean of its divisors is an integer number (1425783363490).

Almost surely, 2^{2851566726979} is an apocalyptic number.

2851566726979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851566726979 is an equidigital number, since it uses as much as digits as its factorization.

2851566726979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 685843200, while the sum is 73.

The spelling of 2851566726979 in words is "two trillion, eight hundred fifty-one billion, five hundred sixty-six million, seven hundred twenty-six thousand, nine hundred seventy-nine".