16817760961 has 2 divisors, whose sum is σ = 16817760962. Its totient is φ = 16817760960.

The previous prime is 16817760929. The next prime is 16817760979. The reversal of 16817760961 is 16906771861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16729870336 + 87890625 = 129344^2 + 9375^2 .

It is a cyclic number.

It is not a de Polignac number, because 16817760961 - 2⁵ = 16817760929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16817760899 and 16817760908.

It is not a weakly prime, because it can be changed into another prime (16817760991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8408880480 + 8408880481.

It is an arithmetic number, because the mean of its divisors is an integer number (8408880481).

Almost surely, 2^16817760961 is an apocalyptic number.

It is an amenable number.

16817760961 is a deficient number, since it is larger than the sum of its proper divisors (1).

16817760961 is an equidigital number, since it uses as much as digits as its factorization.

16817760961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 16817760961 in words is "sixteen billion, eight hundred seventeen million, seven hundred sixty thousand, nine hundred sixty-one".