16773963961 has 2 divisors, whose sum is σ = 16773963962. Its totient is φ = 16773963960.

The previous prime is 16773963883. The next prime is 16773963977. The reversal of 16773963961 is 16936937761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16641000000 + 132963961 = 129000^2 + 11531^2 .

It is a cyclic number.

It is not a de Polignac number, because 16773963961 - 2¹⁹ = 16773439673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16773963896 and 16773963905.

It is not a weakly prime, because it can be changed into another prime (16773963761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8386981980 + 8386981981.

It is an arithmetic number, because the mean of its divisors is an integer number (8386981981).

Almost surely, 2^16773963961 is an apocalyptic number.

It is an amenable number.

16773963961 is a deficient number, since it is larger than the sum of its proper divisors (1).

16773963961 is an equidigital number, since it uses as much as digits as its factorization.

16773963961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7715736, while the sum is 58.

The spelling of 16773963961 in words is "sixteen billion, seven hundred seventy-three million, nine hundred sixty-three thousand, nine hundred sixty-one".