6642941760 has 1344 divisors, whose sum is σ = 31522659840. Its totient is φ = 1300561920.

The previous prime is 6642941737. The next prime is 6642941761. The reversal of 6642941760 is 671492466.

It is a tau number, because it is divible by the number of its divisors (1344).

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 (6642941761) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 93562525 + ... + 93562595.

It is an arithmetic number, because the mean of its divisors is an integer number (23454360).

Almost surely, 2^6642941760 is an apocalyptic number.

6642941760 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 6642941760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15761329920).

6642941760 is an abundant number, since it is smaller than the sum of its proper divisors (24879718080).

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

6642941760 is a wasteful number, since it uses less digits than its factorization.

6642941760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6642941760 is about 81504.2438158897. The cubic root of 6642941760 is about 1879.8368049076.

The spelling of 6642941760 in words is "six billion, six hundred forty-two million, nine hundred forty-one thousand, seven hundred sixty".