613287881568 has 60 divisors (see below), whose sum is σ = 1803662631540. Its totient is φ = 204429292992.

The previous prime is 613287881527. The next prime is 613287881573. The reversal of 613287881568 is 865188782316.

613287881568 is a `hidden beast` number, since 61 + 3 + 2 + 8 + 7 + 8 + 8 + 1 + 568 = 666.

613287881568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×613287881568² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 118301398 + ... + 118306581.

It is an arithmetic number, because the mean of its divisors is an integer number (30061043859).

Almost surely, 2^613287881568 is an apocalyptic number.

It is an amenable number.

613287881568 is an abundant number, since it is smaller than the sum of its proper divisors (1190374749972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613287881568 is a wasteful number, since it uses less digits than its factorization.

613287881568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236608001 (or 236607984 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 613287881568 in words is "six hundred thirteen billion, two hundred eighty-seven million, eight hundred eighty-one thousand, five hundred sixty-eight".