6550001565660 has 180 divisors, whose sum is σ = 23902307590392. Its totient is φ = 1497143196864.

The previous prime is 6550001565643. The next prime is 6550001565661. The reversal of 6550001565660 is 665651000556.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550001565661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 41177874 + ... + 41336633.

Almost surely, 2^{6550001565660} is an apocalyptic number.

6550001565660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6550001565660 is an abundant number, since it is smaller than the sum of its proper divisors (17352306024732).

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

6550001565660 is a wasteful number, since it uses less digits than its factorization.

6550001565660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82514542 (or 82514524 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 6550001565660 in words is "six trillion, five hundred fifty billion, one million, five hundred sixty-five thousand, six hundred sixty".