6660909617108 has 6 divisors (see below), whose sum is σ = 11656591829946. Its totient is φ = 3330454808552.

The previous prime is 6660909617029. The next prime is 6660909617113. The reversal of 6660909617108 is 8017169090666.

It can be written as a sum of positive squares in only one way, i.e., 6253740559504 + 407169057604 = 2500748^2 + 638098^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832613702135 + ... + 832613702142.

It is an arithmetic number, because the mean of its divisors is an integer number (1942765304991).

Almost surely, 2^{6660909617108} is an apocalyptic number.

It is an amenable number.

6660909617108 is a deficient number, since it is larger than the sum of its proper divisors (4995682212838).

6660909617108 is a wasteful number, since it uses less digits than its factorization.

6660909617108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665227404281 (or 1665227404279 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 6660909617108 in words is "six trillion, six hundred sixty billion, nine hundred nine million, six hundred seventeen thousand, one hundred eight".