11660276765281 has 4 divisors (see below), whose sum is σ = 11660555434500. Its totient is φ = 11659998096064.

The previous prime is 11660276765273. The next prime is 11660276765287. The reversal of 11660276765281 is 18256767206611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10995962112256 + 664314653025 = 3316016^2 + 815055^2 .

It is a cyclic number.

It is not a de Polignac number, because 11660276765281 - 2³ = 11660276765273 is a prime.

It is a super-2 number, since 2×11660276765281² (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 (11660276765287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139271836 + ... + 139355533.

It is an arithmetic number, because the mean of its divisors is an integer number (2915138858625).

Almost surely, 2^{11660276765281} is an apocalyptic number.

It is an amenable number.

11660276765281 is a deficient number, since it is larger than the sum of its proper divisors (278669219).

11660276765281 is an equidigital number, since it uses as much as digits as its factorization.

11660276765281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278669218.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 11660276765281 in words is "eleven trillion, six hundred sixty billion, two hundred seventy-six million, seven hundred sixty-five thousand, two hundred eighty-one".