6650668644480 has 288 divisors, whose sum is σ = 26715075404940. Its totient is φ = 1520152768512.

The previous prime is 6650668644469. The next prime is 6650668644493. The reversal of 6650668644480 is 844468660566.

6650668644480 is a `hidden beast` number, since 6 + 6 + 50 + 6 + 68 + 6 + 44 + 480 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6159648914496 + 491019729984 = 2481864^2 + 700728^2 .

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11499699 + ... + 12064178.

Almost surely, 2^{6650668644480} is an apocalyptic number.

6650668644480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6650668644480 is an abundant number, since it is smaller than the sum of its proper divisors (20064406760460).

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

6650668644480 is a wasteful number, since it uses less digits than its factorization.

6650668644480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23563916 (or 23563894 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 63.

The spelling of 6650668644480 in words is "six trillion, six hundred fifty billion, six hundred sixty-eight million, six hundred forty-four thousand, four hundred eighty".