6653849545728 has 1848 divisors, whose sum is σ = 26444651281920. Its totient is φ = 1650831114240.

The previous prime is 6653849545727. The next prime is 6653849545741. The reversal of 6653849545728 is 8275459483566.

6653849545728 is a `hidden beast` number, since 6 + 6 + 5 + 3 + 8 + 4 + 9 + 545 + 72 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (1848).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (6653849545723) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 9254310553 + ... + 9254311271.

Almost surely, 2^{6653849545728} 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 6653849545728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13222325640960).

6653849545728 is an abundant number, since it is smaller than the sum of its proper divisors (19790801736192).

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

6653849545728 is a wasteful number, since it uses less digits than its factorization.

6653849545728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 765 counting only the distinct ones).

The product of its digits is 1741824000, while the sum is 72.

The spelling of 6653849545728 in words is "six trillion, six hundred fifty-three billion, eight hundred forty-nine million, five hundred forty-five thousand, seven hundred twenty-eight".