6537421008 has 160 divisors (see below), whose sum is σ = 19998720000. Its totient is φ = 2039900544.

The previous prime is 6537421001. The next prime is 6537421039. The reversal of 6537421008 is 8001247356.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6537421001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459993 + ... + 473991.

It is an arithmetic number, because the mean of its divisors is an integer number (124992000).

Almost surely, 2^6537421008 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 6537421008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9999360000).

6537421008 is an abundant number, since it is smaller than the sum of its proper divisors (13461298992).

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

6537421008 is a wasteful number, since it uses less digits than its factorization.

6537421008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14086 (or 14074 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 6537421008 is about 80854.3196619698. The cubic root of 6537421008 is about 1869.8301205931.

The spelling of 6537421008 in words is "six billion, five hundred thirty-seven million, four hundred twenty-one thousand, eight".