6555661516650 has 96 divisors (see below), whose sum is σ = 16783418221056. Its totient is φ = 1691690400000.

The previous prime is 6555661516609. The next prime is 6555661516661. The reversal of 6555661516650 is 566151665556.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134365260 + ... + 134414040.

It is an arithmetic number, because the mean of its divisors is an integer number (174827273136).

Almost surely, 2^{6555661516650} is an apocalyptic number.

6555661516650 is an abundant number, since it is smaller than the sum of its proper divisors (10227756704406).

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

6555661516650 is a wasteful number, since it uses less digits than its factorization.

6555661516650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77728 (or 77723 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 57.

The spelling of 6555661516650 in words is "six trillion, five hundred fifty-five billion, six hundred sixty-one million, five hundred sixteen thousand, six hundred fifty".