255061685779 has 2 divisors, whose sum is σ = 255061685780. Its totient is φ = 255061685778.

The previous prime is 255061685777. The next prime is 255061685803. The reversal of 255061685779 is 977586160552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255061685779 - 2¹ = 255061685777 is a prime.

Together with 255061685777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (255061685777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127530842889 + 127530842890.

It is an arithmetic number, because the mean of its divisors is an integer number (127530842890).

Almost surely, 2^255061685779 is an apocalyptic number.

255061685779 is a deficient number, since it is larger than the sum of its proper divisors (1).

255061685779 is an equidigital number, since it uses as much as digits as its factorization.

255061685779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752000, while the sum is 61.

The spelling of 255061685779 in words is "two hundred fifty-five billion, sixty-one million, six hundred eighty-five thousand, seven hundred seventy-nine".