16777920378319 has 2 divisors, whose sum is σ = 16777920378320. Its totient is φ = 16777920378318.

The previous prime is 16777920378293. The next prime is 16777920378361. The reversal of 16777920378319 is 91387302977761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16777920378319 - 2⁹ = 16777920377807 is a prime.

It is a super-2 number, since 2×16777920378319² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16777920378019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8388960189159 + 8388960189160.

It is an arithmetic number, because the mean of its divisors is an integer number (8388960189160).

Almost surely, 2^{16777920378319} is an apocalyptic number.

16777920378319 is a deficient number, since it is larger than the sum of its proper divisors (1).

16777920378319 is an equidigital number, since it uses as much as digits as its factorization.

16777920378319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168031584, while the sum is 70.

The spelling of 16777920378319 in words is "sixteen trillion, seven hundred seventy-seven billion, nine hundred twenty million, three hundred seventy-eight thousand, three hundred nineteen".