613689128255 has 16 divisors (see below), whose sum is σ = 845404944384. Its totient is φ = 418928332320.

The previous prime is 613689128249. The next prime is 613689128323. The reversal of 613689128255 is 552821986316.

It is not a de Polignac number, because 613689128255 - 2¹⁸ = 613688866111 is a prime.

It is a super-2 number, since 2×613689128255² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 613689128255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39306041 + ... + 39321650.

It is an arithmetic number, because the mean of its divisors is an integer number (52837809024).

Almost surely, 2^613689128255 is an apocalyptic number.

613689128255 is a deficient number, since it is larger than the sum of its proper divisors (231715816129).

613689128255 is a wasteful number, since it uses less digits than its factorization.

613689128255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78627926.

The product of its digits is 6220800, while the sum is 56.

The spelling of 613689128255 in words is "six hundred thirteen billion, six hundred eighty-nine million, one hundred twenty-eight thousand, two hundred fifty-five".