9986364734641 has 3 divisors (see below), whose sum is σ = 9986367894763. Its totient is φ = 9986361574520.

The previous prime is 9986364734639. The next prime is 9986364734677. The reversal of 9986364734641 is 1464374636899.

The square root of 9986364734641 is 3160121.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3000069949041 + 6986294785600 = 1732071^2 + 2643160^2 .

It is not a de Polignac number, because 9986364734641 - 2¹ = 9986364734639 is a prime.

It is a super-2 number, since 2×9986364734641² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9986364734681) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1580061 + ... + 4740181.

Almost surely, 2^{9986364734641} is an apocalyptic number.

9986364734641 is the 3160121-st square number.

9986364734641 is the 1580061-st centered octagonal number.

It is an amenable number.

9986364734641 is a deficient number, since it is larger than the sum of its proper divisors (3160122).

9986364734641 is an frugal number, since it uses more digits than its factorization.

9986364734641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6320242 (or 3160121 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 70.

The spelling of 9986364734641 in words is "nine trillion, nine hundred eighty-six billion, three hundred sixty-four million, seven hundred thirty-four thousand, six hundred forty-one".