2613820618664 has 8 divisors (see below), whose sum is σ = 4900913660010. Its totient is φ = 1306910309328.

The previous prime is 2613820618589. The next prime is 2613820618723. The reversal of 2613820618664 is 4668160283162.

2613820618664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1328159441764 + 1285661176900 = 1152458^2 + 1133870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163363788659 + ... + 163363788674.

Almost surely, 2^{2613820618664} is an apocalyptic number.

It is an amenable number.

2613820618664 is a deficient number, since it is larger than the sum of its proper divisors (2287093041346).

2613820618664 is a wasteful number, since it uses less digits than its factorization.

2613820618664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326727577339 (or 326727577335 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 2613820618664 in words is "two trillion, six hundred thirteen billion, eight hundred twenty million, six hundred eighteen thousand, six hundred sixty-four".