10665915668641 has 8 divisors (see below), whose sum is σ = 11075732010504. Its totient is φ = 10263226567680.

The previous prime is 10665915668567. The next prime is 10665915668647. The reversal of 10665915668641 is 14686651956601.

It can be written as a sum of positive squares in 4 ways, for example, as 2779905963025 + 7886009705616 = 1667305^2 + 2808204^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10665915668641 - 2¹⁵ = 10665915635873 is a prime.

It is a super-2 number, since 2×10665915668641² (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 (10665915668647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1781807176 + ... + 1781813161.

It is an arithmetic number, because the mean of its divisors is an integer number (1384466501313).

Almost surely, 2^{10665915668641} is an apocalyptic number.

It is an amenable number.

10665915668641 is a deficient number, since it is larger than the sum of its proper divisors (409816341863).

10665915668641 is an equidigital number, since it uses as much as digits as its factorization.

10665915668641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563620451.

The product of its (nonzero) digits is 55987200, while the sum is 64.

The spelling of 10665915668641 in words is "ten trillion, six hundred sixty-five billion, nine hundred fifteen million, six hundred sixty-eight thousand, six hundred forty-one".