16968413953 has 2 divisors, whose sum is σ = 16968413954. Its totient is φ = 16968413952.

The previous prime is 16968413951. The next prime is 16968413989. The reversal of 16968413953 is 35931486961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10997297424 + 5971116529 = 104868^2 + 77273^2 .

It is an emirp because it is prime and its reverse (35931486961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16968413953 - 2¹ = 16968413951 is a prime.

Together with 16968413951, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16968413894 and 16968413903.

It is not a weakly prime, because it can be changed into another prime (16968413951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8484206976 + 8484206977.

It is an arithmetic number, because the mean of its divisors is an integer number (8484206977).

Almost surely, 2^16968413953 is an apocalyptic number.

It is an amenable number.

16968413953 is a deficient number, since it is larger than the sum of its proper divisors (1).

16968413953 is an equidigital number, since it uses as much as digits as its factorization.

16968413953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 55.

The spelling of 16968413953 in words is "sixteen billion, nine hundred sixty-eight million, four hundred thirteen thousand, nine hundred fifty-three".