161013344616013 has 8 divisors (see below), whose sum is σ = 165365217886232. Its totient is φ = 156661479832896.

The previous prime is 161013344615989. The next prime is 161013344616029. The reversal of 161013344616013 is 310616443310161.

It can be written as a sum of positive squares in 4 ways, for example, as 71262011872489 + 89751332743524 = 8441683^2 + 9473718^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161013344616013 is a prime.

It is a super-3 number, since 3×161013344616013³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161013344616083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62913631 + ... + 65422867.

It is an arithmetic number, because the mean of its divisors is an integer number (20670652235779).

Almost surely, 2^{161013344616013} is an apocalyptic number.

It is an amenable number.

161013344616013 is a deficient number, since it is larger than the sum of its proper divisors (4351873270219).

161013344616013 is a wasteful number, since it uses less digits than its factorization.

161013344616013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243551.

The product of its (nonzero) digits is 93312, while the sum is 40.

Adding to 161013344616013 its reverse (310616443310161), we get a palindrome (471629787926174).

The spelling of 161013344616013 in words is "one hundred sixty-one trillion, thirteen billion, three hundred forty-four million, six hundred sixteen thousand, thirteen".