6610555555 has 8 divisors (see below), whose sum is σ = 7980168672. Its totient is φ = 5256776448.

The previous prime is 6610555513. The next prime is 6610555559. The reversal of 6610555555 is 5555550166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6610555555 - 2¹¹ = 6610553507 is a prime.

It is a Duffinian number.

6610555555 is a modest number, since divided by 555555 gives 6610 as remainder.

It is not an unprimeable number, because it can be changed into a prime (6610555559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3957582 + ... + 3959251.

It is an arithmetic number, because the mean of its divisors is an integer number (997521084).

Almost surely, 2^6610555555 is an apocalyptic number.

6610555555 is a deficient number, since it is larger than the sum of its proper divisors (1369613117).

6610555555 is a wasteful number, since it uses less digits than its factorization.

6610555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7917005.

The product of its (nonzero) digits is 562500, while the sum is 43.

The square root of 6610555555 is about 81305.3230422215. The cubic root of 6610555555 is about 1876.7769162750.

The spelling of 6610555555 in words is "six billion, six hundred ten million, five hundred fifty-five thousand, five hundred fifty-five".