263216706673 has 2 divisors, whose sum is σ = 263216706674. Its totient is φ = 263216706672.

The previous prime is 263216706659. The next prime is 263216706773. The reversal of 263216706673 is 376607612362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184845823969 + 78370882704 = 429937^2 + 279948^2 .

It is a cyclic number.

It is not a de Polignac number, because 263216706673 - 2³⁷ = 125777753201 is a prime.

It is not a weakly prime, because it can be changed into another prime (263216706653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131608353336 + 131608353337.

It is an arithmetic number, because the mean of its divisors is an integer number (131608353337).

Almost surely, 2^263216706673 is an apocalyptic number.

It is an amenable number.

263216706673 is a deficient number, since it is larger than the sum of its proper divisors (1).

263216706673 is an equidigital number, since it uses as much as digits as its factorization.

263216706673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 263216706673 in words is "two hundred sixty-three billion, two hundred sixteen million, seven hundred six thousand, six hundred seventy-three".