9941481664 has 28 divisors (see below), whose sum is σ = 20186415304. Its totient is φ = 4855140864.

The previous prime is 9941481637. The next prime is 9941481679. The reversal of 9941481664 is 4661841499.

It is a super-3 number, since 3×9941481664³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1803477 + ... + 1808980.

Almost surely, 2^9941481664 is an apocalyptic number.

It is an amenable number.

9941481664 is an abundant number, since it is smaller than the sum of its proper divisors (10244933640).

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

9941481664 is a wasteful number, since it uses less digits than its factorization.

9941481664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612512 (or 3612502 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 9941481664 is about 99706.9790135074. The cubic root of 9941481664 is about 2150.2240014674.

The spelling of 9941481664 in words is "nine billion, nine hundred forty-one million, four hundred eighty-one thousand, six hundred sixty-four".