6641598016 has 63 divisors (see below), whose sum is σ = 13479733137. Its totient is φ = 3246800640.

The previous prime is 6641598011. The next prime is 6641598023. The reversal of 6641598016 is 6108951466.

The square root of 6641598016 is 81496.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 215972416 + 6425625600 = 14696^2 + 80160^2 .

It is a super-2 number, since 2×6641598016² = 88221648412270272512, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6641598011) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39769965 + ... + 39770131.

Almost surely, 2^6641598016 is an apocalyptic number.

6641598016 is the 81496-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6641598016

6641598016 is an abundant number, since it is smaller than the sum of its proper divisors (6838135121).

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

6641598016 is an frugal number, since it uses more digits than its factorization.

6641598016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The cubic root of 6641598016 is about 1879.7100443117.

The spelling of 6641598016 in words is "six billion, six hundred forty-one million, five hundred ninety-eight thousand, sixteen".