673436667049 has 2 divisors, whose sum is σ = 673436667050. Its totient is φ = 673436667048.

The previous prime is 673436667041. The next prime is 673436667053. The reversal of 673436667049 is 940766634376.

673436667049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561402535824 + 112034131225 = 749268^2 + 334715^2 .

It is a cyclic number.

It is not a de Polignac number, because 673436667049 - 2³ = 673436667041 is a prime.

It is not a weakly prime, because it can be changed into another prime (673436667041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336718333524 + 336718333525.

It is an arithmetic number, because the mean of its divisors is an integer number (336718333525).

Almost surely, 2^673436667049 is an apocalyptic number.

It is an amenable number.

673436667049 is a deficient number, since it is larger than the sum of its proper divisors (1).

673436667049 is an equidigital number, since it uses as much as digits as its factorization.

673436667049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82301184, while the sum is 61.

The spelling of 673436667049 in words is "six hundred seventy-three billion, four hundred thirty-six million, six hundred sixty-seven thousand, forty-nine".