6663535555560 has 128 divisors (see below), whose sum is σ = 21741498092160. Its totient is φ = 1624014720000.

The previous prime is 6663535555549. The next prime is 6663535555657. The reversal of 6663535555560 is 655555353666.

It is a super-2 number, since 2×6663535555560² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 6663535555494 and 6663535555503.

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, 20988466 + ... + 21303585.

It is an arithmetic number, because the mean of its divisors is an integer number (169855453845).

Almost surely, 2^{6663535555560} is an apocalyptic number.

6663535555560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6663535555560 is an abundant number, since it is smaller than the sum of its proper divisors (15077962536600).

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

6663535555560 is a wasteful number, since it uses less digits than its factorization.

6663535555560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42292179 (or 42292175 counting only the distinct ones).

The product of its (nonzero) digits is 182250000, while the sum is 60.

The spelling of 6663535555560 in words is "six trillion, six hundred sixty-three billion, five hundred thirty-five million, five hundred fifty-five thousand, five hundred sixty".