1613613422605 has 8 divisors (see below), whose sum is σ = 1950469948152. Its totient is φ = 1281468177408.

The previous prime is 1613613422593. The next prime is 1613613422647. The reversal of 1613613422605 is 5062243163161.

It can be written as a sum of positive squares in 4 ways, for example, as 101111916361 + 1512501506244 = 317981^2 + 1229838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1613613422605 - 2¹¹ = 1613613420557 is a prime.

It is a super-2 number, since 2×1613613422605² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177819332 + ... + 1177820701.

It is an arithmetic number, because the mean of its divisors is an integer number (243808743519).

Almost surely, 2^{1613613422605} is an apocalyptic number.

It is an amenable number.

1613613422605 is a deficient number, since it is larger than the sum of its proper divisors (336856525547).

1613613422605 is a wasteful number, since it uses less digits than its factorization.

1613613422605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355640175.

The product of its (nonzero) digits is 155520, while the sum is 40.

Adding to 1613613422605 its reverse (5062243163161), we get a palindrome (6675856585766).

The spelling of 1613613422605 in words is "one trillion, six hundred thirteen billion, six hundred thirteen million, four hundred twenty-two thousand, six hundred five".