6618661105122 has 64 divisors (see below), whose sum is σ = 16248343449600. Its totient is φ = 1980266829840.

The previous prime is 6618661105073. The next prime is 6618661105141. The reversal of 6618661105122 is 2215011668166.

6618661105122 is a `hidden beast` number, since 6 + 6 + 1 + 8 + 6 + 611 + 0 + 5 + 1 + 22 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70475398 + ... + 70569249.

It is an arithmetic number, because the mean of its divisors is an integer number (253880366400).

Almost surely, 2^{6618661105122} is an apocalyptic number.

6618661105122 is an abundant number, since it is smaller than the sum of its proper divisors (9629682344478).

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

6618661105122 is a wasteful number, since it uses less digits than its factorization.

6618661105122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141044748 (or 141044742 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 6618661105122 in words is "six trillion, six hundred eighteen billion, six hundred sixty-one million, one hundred five thousand, one hundred twenty-two".