613816549956 has 36 divisors (see below), whose sum is σ = 1551897908652. Its totient is φ = 204565155264.

The previous prime is 613816549937. The next prime is 613816549963. The reversal of 613816549956 is 659945618316.

613816549956 is a `hidden beast` number, since 6 + 1 + 3 + 81 + 6 + 549 + 9 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 382955519556 + 230861030400 = 618834^2 + 480480^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 613816549893 and 613816549902.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1496415 + ... + 1861958.

Almost surely, 2^613816549956 is an apocalyptic number.

It is an amenable number.

613816549956 is an abundant number, since it is smaller than the sum of its proper divisors (938081358696).

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

613816549956 is a wasteful number, since it uses less digits than its factorization.

613816549956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363460 (or 3363455 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 63.

The spelling of 613816549956 in words is "six hundred thirteen billion, eight hundred sixteen million, five hundred forty-nine thousand, nine hundred fifty-six".