16922106936661 has 2 divisors, whose sum is σ = 16922106936662. Its totient is φ = 16922106936660.

The previous prime is 16922106936659. The next prime is 16922106936677. The reversal of 16922106936661 is 16663960122961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16019285808100 + 902821128561 = 4002410^2 + 950169^2 .

It is a cyclic number.

It is not a de Polignac number, because 16922106936661 - 2¹ = 16922106936659 is a prime.

Together with 16922106936659, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16922106936596 and 16922106936605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16922106930661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8461053468330 + 8461053468331.

It is an arithmetic number, because the mean of its divisors is an integer number (8461053468331).

Almost surely, 2^{16922106936661} is an apocalyptic number.

It is an amenable number.

16922106936661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16922106936661 is an equidigital number, since it uses as much as digits as its factorization.

16922106936661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 16922106936661 in words is "sixteen trillion, nine hundred twenty-two billion, one hundred six million, nine hundred thirty-six thousand, six hundred sixty-one".