11660524531321 has 2 divisors, whose sum is σ = 11660524531322. Its totient is φ = 11660524531320.

The previous prime is 11660524531319. The next prime is 11660524531351. The reversal of 11660524531321 is 12313542506611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11495354630400 + 165169900921 = 3390480^2 + 406411^2 .

It is a cyclic number.

It is not a de Polignac number, because 11660524531321 - 2¹ = 11660524531319 is a prime.

Together with 11660524531319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11660524531351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830262265660 + 5830262265661.

It is an arithmetic number, because the mean of its divisors is an integer number (5830262265661).

Almost surely, 2^{11660524531321} is an apocalyptic number.

It is an amenable number.

11660524531321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11660524531321 is an equidigital number, since it uses as much as digits as its factorization.

11660524531321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 11660524531321 in words is "eleven trillion, six hundred sixty billion, five hundred twenty-four million, five hundred thirty-one thousand, three hundred twenty-one".