673579308169 has 2 divisors, whose sum is σ = 673579308170. Its totient is φ = 673579308168.

The previous prime is 673579308091. The next prime is 673579308209. The reversal of 673579308169 is 961803975376.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636325290000 + 37254018169 = 797700^2 + 193013^2 .

It is a cyclic number.

It is not a de Polignac number, because 673579308169 - 2²⁵ = 673545753737 is a prime.

It is a super-2 number, since 2×673579308169² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 673579308169.

It is not a weakly prime, because it can be changed into another prime (673579302169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336789654084 + 336789654085.

It is an arithmetic number, because the mean of its divisors is an integer number (336789654085).

Almost surely, 2^673579308169 is an apocalyptic number.

It is an amenable number.

673579308169 is a deficient number, since it is larger than the sum of its proper divisors (1).

673579308169 is an equidigital number, since it uses as much as digits as its factorization.

673579308169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 673579308169 in words is "six hundred seventy-three billion, five hundred seventy-nine million, three hundred eight thousand, one hundred sixty-nine".