1613061545209 has 2 divisors, whose sum is σ = 1613061545210. Its totient is φ = 1613061545208.

The previous prime is 1613061545201. The next prime is 1613061545357. The reversal of 1613061545209 is 9025451603161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1526509670400 + 86551874809 = 1235520^2 + 294197^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613061545209 - 2³ = 1613061545201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613061545201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806530772604 + 806530772605.

It is an arithmetic number, because the mean of its divisors is an integer number (806530772605).

Almost surely, 2^{1613061545209} is an apocalyptic number.

It is an amenable number.

1613061545209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613061545209 is an equidigital number, since it uses as much as digits as its factorization.

1613061545209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 1613061545209 in words is "one trillion, six hundred thirteen billion, sixty-one million, five hundred forty-five thousand, two hundred nine".