673809442337 has 2 divisors, whose sum is σ = 673809442338. Its totient is φ = 673809442336.

The previous prime is 673809442331. The next prime is 673809442349. The reversal of 673809442337 is 733244908376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490782912481 + 183026529856 = 700559^2 + 427816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673809442337 is a prime.

It is not a weakly prime, because it can be changed into another prime (673809442331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336904721168 + 336904721169.

It is an arithmetic number, because the mean of its divisors is an integer number (336904721169).

Almost surely, 2^673809442337 is an apocalyptic number.

It is an amenable number.

673809442337 is a deficient number, since it is larger than the sum of its proper divisors (1).

673809442337 is an equidigital number, since it uses as much as digits as its factorization.

673809442337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 56.

The spelling of 673809442337 in words is "six hundred seventy-three billion, eight hundred nine million, four hundred forty-two thousand, three hundred thirty-seven".