613308326913 has 144 divisors (see below), whose sum is σ = 1036649427840. Its totient is φ = 357624989568.

The previous prime is 613308326857. The next prime is 613308326923. The reversal of 613308326913 is 319623803316.

613308326913 is a `hidden beast` number, since 6 + 1 + 3 + 308 + 326 + 9 + 13 = 666.

It is not a de Polignac number, because 613308326913 - 2⁹ = 613308326401 is a prime.

It is a super-2 number, since 2×613308326913² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (613308326923) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 188534595 + ... + 188537847.

It is an arithmetic number, because the mean of its divisors is an integer number (7198954360).

Almost surely, 2^613308326913 is an apocalyptic number.

It is an amenable number.

613308326913 is a deficient number, since it is larger than the sum of its proper divisors (423341100927).

613308326913 is a wasteful number, since it uses less digits than its factorization.

613308326913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381 (or 3327 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 613308326913 in words is "six hundred thirteen billion, three hundred eight million, three hundred twenty-six thousand, nine hundred thirteen".