16679066890601 has 2 divisors, whose sum is σ = 16679066890602. Its totient is φ = 16679066890600.

The previous prime is 16679066890597. The next prime is 16679066890723. The reversal of 16679066890601 is 10609866097661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16609708401001 + 69358489600 = 4075501^2 + 263360^2 .

It is a cyclic number.

It is not a de Polignac number, because 16679066890601 - 2² = 16679066890597 is a prime.

It is a super-2 number, since 2×16679066890601² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16679066890001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8339533445300 + 8339533445301.

It is an arithmetic number, because the mean of its divisors is an integer number (8339533445301).

Almost surely, 2^{16679066890601} is an apocalyptic number.

It is an amenable number.

16679066890601 is a deficient number, since it is larger than the sum of its proper divisors (1).

16679066890601 is an equidigital number, since it uses as much as digits as its factorization.

16679066890601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35271936, while the sum is 65.

The spelling of 16679066890601 in words is "sixteen trillion, six hundred seventy-nine billion, sixty-six million, eight hundred ninety thousand, six hundred one".