10327561981 has 8 divisors (see below), whose sum is σ = 11352436128. Its totient is φ = 9317022000.

The previous prime is 10327561963. The next prime is 10327562009. The reversal of 10327561981 is 18916572301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10327561981 - 2¹¹ = 10327559933 is a prime.

It is a super-2 number, since 2×10327561981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10327561961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3582030 + ... + 3584911.

It is an arithmetic number, because the mean of its divisors is an integer number (1419054516).

Almost surely, 2^10327561981 is an apocalyptic number.

10327561981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10327561981 is a deficient number, since it is larger than the sum of its proper divisors (1024874147).

10327561981 is a wasteful number, since it uses less digits than its factorization.

10327561981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167083.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 10327561981 in words is "ten billion, three hundred twenty-seven million, five hundred sixty-one thousand, nine hundred eighty-one".