6641770055760 has 1920 divisors, whose sum is σ = 29254813286400. Its totient is φ = 1315146792960.

The previous prime is 6641770055749. The next prime is 6641770055771. The reversal of 6641770055760 is 675500771466.

6641770055760 is a `hidden beast` number, since 6 + 6 + 4 + 17 + 70 + 0 + 557 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (6641770055749) and next prime (6641770055771).

It is a super-2 number, since 2×6641770055760² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6641770055697 and 6641770055706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 6076641774 + ... + 6076642866.

It is an arithmetic number, because the mean of its divisors is an integer number (15236881920).

Almost surely, 2^{6641770055760} is an apocalyptic number.

6641770055760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6641770055760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14627406643200).

6641770055760 is an abundant number, since it is smaller than the sum of its proper divisors (22613043230640).

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

6641770055760 is a wasteful number, since it uses less digits than its factorization.

6641770055760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 54.

The spelling of 6641770055760 in words is "six trillion, six hundred forty-one billion, seven hundred seventy million, fifty-five thousand, seven hundred sixty".