1672685590409 has 2 divisors, whose sum is σ = 1672685590410. Its totient is φ = 1672685590408.

The previous prime is 1672685590379. The next prime is 1672685590439. The reversal of 1672685590409 is 9040955862761.

It is a balanced prime because it is at equal distance from previous prime (1672685590379) and next prime (1672685590439).

It can be written as a sum of positive squares in only one way, i.e., 1668044574784 + 4641015625 = 1291528^2 + 68125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1672685590409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1672685590439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836342795204 + 836342795205.

It is an arithmetic number, because the mean of its divisors is an integer number (836342795205).

Almost surely, 2^{1672685590409} is an apocalyptic number.

It is an amenable number.

1672685590409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672685590409 is an equidigital number, since it uses as much as digits as its factorization.

1672685590409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 1672685590409 in words is "one trillion, six hundred seventy-two billion, six hundred eighty-five million, five hundred ninety thousand, four hundred nine".