6668051544 has 240 divisors, whose sum is σ = 23463594000. Its totient is φ = 1731818880.

The previous prime is 6668051543. The next prime is 6668051617. The reversal of 6668051544 is 4451508666.

It is a super-2 number, since 2×6668051544² = 88925822786881567872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6668051544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668051543) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 542782 + ... + 554930.

It is an arithmetic number, because the mean of its divisors is an integer number (97764975).

Almost surely, 2^6668051544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6668051544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11731797000).

6668051544 is an abundant number, since it is smaller than the sum of its proper divisors (16795542456).

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

6668051544 is a wasteful number, since it uses less digits than its factorization.

6668051544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12196 (or 12172 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 6668051544 is about 81658.1382594534. The cubic root of 6668051544 is about 1882.2023706857.

The spelling of 6668051544 in words is "six billion, six hundred sixty-eight million, fifty-one thousand, five hundred forty-four".