613927128377 has 4 divisors (see below), whose sum is σ = 613948715556. Its totient is φ = 613905541200.

The previous prime is 613927128349. The next prime is 613927128401. The reversal of 613927128377 is 773821729316.

It is a happy number.

613927128377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 474636945721 + 139290182656 = 688939^2 + 373216^2 .

It is a cyclic number.

It is not a de Polignac number, because 613927128377 - 2¹⁰ = 613927127353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613927128977) 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, 10750874 + ... + 10807827.

It is an arithmetic number, because the mean of its divisors is an integer number (153487178889).

Almost surely, 2^613927128377 is an apocalyptic number.

It is an amenable number.

613927128377 is a deficient number, since it is larger than the sum of its proper divisors (21587179).

613927128377 is a wasteful number, since it uses less digits than its factorization.

613927128377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21587178.

The product of its digits is 5334336, while the sum is 56.

The spelling of 613927128377 in words is "six hundred thirteen billion, nine hundred twenty-seven million, one hundred twenty-eight thousand, three hundred seventy-seven".