673632211121729 has 2 divisors, whose sum is σ = 673632211121730. Its totient is φ = 673632211121728.

The previous prime is 673632211121671. The next prime is 673632211121747. The reversal of 673632211121729 is 927121112236376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553136540511025 + 120495670610704 = 23518855^2 + 10977052^2 .

It is a cyclic number.

It is not a de Polignac number, because 673632211121729 - 2²⁴ = 673632194344513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (673632211129729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336816105560864 + 336816105560865.

It is an arithmetic number, because the mean of its divisors is an integer number (336816105560865).

Almost surely, 2^{673632211121729} is an apocalyptic number.

It is an amenable number.

673632211121729 is a deficient number, since it is larger than the sum of its proper divisors (1).

673632211121729 is an equidigital number, since it uses as much as digits as its factorization.

673632211121729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 53.

The spelling of 673632211121729 in words is "six hundred seventy-three trillion, six hundred thirty-two billion, two hundred eleven million, one hundred twenty-one thousand, seven hundred twenty-nine".