1673701736689 has 2 divisors, whose sum is σ = 1673701736690. Its totient is φ = 1673701736688.

The previous prime is 1673701736677. The next prime is 1673701736783. The reversal of 1673701736689 is 9866371073761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1637844527089 + 35857209600 = 1279783^2 + 189360^2 .

It is a cyclic number.

It is not a de Polignac number, because 1673701736689 - 2⁷ = 1673701736561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1673701736689.

It is not a weakly prime, because it can be changed into another prime (1673701736669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836850868344 + 836850868345.

It is an arithmetic number, because the mean of its divisors is an integer number (836850868345).

Almost surely, 2^{1673701736689} is an apocalyptic number.

It is an amenable number.

1673701736689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1673701736689 is an equidigital number, since it uses as much as digits as its factorization.

1673701736689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48009024, while the sum is 64.

The spelling of 1673701736689 in words is "one trillion, six hundred seventy-three billion, seven hundred one million, seven hundred thirty-six thousand, six hundred eighty-nine".