478291806779 has 2 divisors, whose sum is σ = 478291806780. Its totient is φ = 478291806778.

The previous prime is 478291806701. The next prime is 478291806803. The reversal of 478291806779 is 977608192874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478291806779 - 2²⁸ = 478023371323 is a prime.

It is not a weakly prime, because it can be changed into another prime (478291805779) 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, 239145903389 + 239145903390.

It is an arithmetic number, because the mean of its divisors is an integer number (239145903390).

Almost surely, 2^478291806779 is an apocalyptic number.

478291806779 is a deficient number, since it is larger than the sum of its proper divisors (1).

478291806779 is an equidigital number, since it uses as much as digits as its factorization.

478291806779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85349376, while the sum is 68.

The spelling of 478291806779 in words is "four hundred seventy-eight billion, two hundred ninety-one million, eight hundred six thousand, seven hundred seventy-nine".