16950621473 has 2 divisors, whose sum is σ = 16950621474. Its totient is φ = 16950621472.

The previous prime is 16950621439. The next prime is 16950621521. The reversal of 16950621473 is 37412605961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15932245729 + 1018375744 = 126223^2 + 31912^2 .

It is a cyclic number.

It is not a de Polignac number, because 16950621473 - 2⁸ = 16950621217 is a prime.

It is not a weakly prime, because it can be changed into another prime (16950624473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8475310736 + 8475310737.

It is an arithmetic number, because the mean of its divisors is an integer number (8475310737).

Almost surely, 2^16950621473 is an apocalyptic number.

It is an amenable number.

16950621473 is a deficient number, since it is larger than the sum of its proper divisors (1).

16950621473 is an equidigital number, since it uses as much as digits as its factorization.

16950621473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 16950621473 in words is "sixteen billion, nine hundred fifty million, six hundred twenty-one thousand, four hundred seventy-three".