16226318907668 has 6 divisors (see below), whose sum is σ = 28396058088426. Its totient is φ = 8113159453832.

The previous prime is 16226318907641. The next prime is 16226318907697. The reversal of 16226318907668 is 86670981362261.

It can be written as a sum of positive squares in only one way, i.e., 11650835342224 + 4575483565444 = 3413332^2 + 2139038^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2028289863455 + ... + 2028289863462.

It is an arithmetic number, because the mean of its divisors is an integer number (4732676348071).

Almost surely, 2^{16226318907668} is an apocalyptic number.

It is an amenable number.

16226318907668 is a deficient number, since it is larger than the sum of its proper divisors (12169739180758).

16226318907668 is a wasteful number, since it uses less digits than its factorization.

16226318907668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056579726921 (or 4056579726919 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 16226318907668 in words is "sixteen trillion, two hundred twenty-six billion, three hundred eighteen million, nine hundred seven thousand, six hundred sixty-eight".