16668503703079 has 2 divisors, whose sum is σ = 16668503703080. Its totient is φ = 16668503703078.

The previous prime is 16668503703041. The next prime is 16668503703091. The reversal of 16668503703079 is 97030730586661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16668503703079 - 2²¹ = 16668501605927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16668503703179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8334251851539 + 8334251851540.

It is an arithmetic number, because the mean of its divisors is an integer number (8334251851540).

Almost surely, 2^{16668503703079} is an apocalyptic number.

16668503703079 is a deficient number, since it is larger than the sum of its proper divisors (1).

16668503703079 is an equidigital number, since it uses as much as digits as its factorization.

16668503703079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 61.

The spelling of 16668503703079 in words is "sixteen trillion, six hundred sixty-eight billion, five hundred three million, seven hundred three thousand, seventy-nine".