613310021017 has 4 divisors (see below), whose sum is σ = 624881908260. Its totient is φ = 601738133776.

The previous prime is 613310020957. The next prime is 613310021021. The reversal of 613310021017 is 710120013316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 466449386841 + 146860634176 = 682971^2 + 383224^2 .

It is a cyclic number.

It is not a de Polignac number, because 613310021017 - 2³⁵ = 578950282649 is a prime.

It is a super-2 number, since 2×613310021017² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 613310020982 and 613310021000.

It is not an unprimeable number, because it can be changed into a prime (613310025017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5785943542 + ... + 5785943647.

It is an arithmetic number, because the mean of its divisors is an integer number (156220477065).

Almost surely, 2^613310021017 is an apocalyptic number.

It is an amenable number.

613310021017 is a deficient number, since it is larger than the sum of its proper divisors (11571887243).

613310021017 is a wasteful number, since it uses less digits than its factorization.

613310021017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11571887242.

The product of its (nonzero) digits is 756, while the sum is 25.

The spelling of 613310021017 in words is "six hundred thirteen billion, three hundred ten million, twenty-one thousand, seventeen".