16626665217983 has 2 divisors, whose sum is σ = 16626665217984. Its totient is φ = 16626665217982.

The previous prime is 16626665217937. The next prime is 16626665217989. The reversal of 16626665217983 is 38971256662661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16626665217983 - 2¹² = 16626665213887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16626665217989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8313332608991 + 8313332608992.

It is an arithmetic number, because the mean of its divisors is an integer number (8313332608992).

Almost surely, 2^{16626665217983} is an apocalyptic number.

16626665217983 is a deficient number, since it is larger than the sum of its proper divisors (1).

16626665217983 is an equidigital number, since it uses as much as digits as its factorization.

16626665217983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235146240, while the sum is 68.

The spelling of 16626665217983 in words is "sixteen trillion, six hundred twenty-six billion, six hundred sixty-five million, two hundred seventeen thousand, nine hundred eighty-three".