16777212779 has 2 divisors, whose sum is σ = 16777212780. Its totient is φ = 16777212778.

The previous prime is 16777212763. The next prime is 16777212811. The reversal of 16777212779 is 97721277761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16777212779 - 2⁴ = 16777212763 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16777212379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8388606389 + 8388606390.

It is an arithmetic number, because the mean of its divisors is an integer number (8388606390).

Almost surely, 2^16777212779 is an apocalyptic number.

16777212779 is a deficient number, since it is larger than the sum of its proper divisors (1).

16777212779 is an equidigital number, since it uses as much as digits as its factorization.

16777212779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3630312, while the sum is 56.

The spelling of 16777212779 in words is "sixteen billion, seven hundred seventy-seven million, two hundred twelve thousand, seven hundred seventy-nine".