11323503061721 has 2 divisors, whose sum is σ = 11323503061722. Its totient is φ = 11323503061720.

The previous prime is 11323503061697. The next prime is 11323503061729. The reversal of 11323503061721 is 12716030532311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6096632586496 + 5226870475225 = 2469136^2 + 2286235^2 .

It is a cyclic number.

It is not a de Polignac number, because 11323503061721 - 2¹⁰ = 11323503060697 is a prime.

It is a super-2 number, since 2×11323503061721² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11323503061729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661751530860 + 5661751530861.

It is an arithmetic number, because the mean of its divisors is an integer number (5661751530861).

Almost surely, 2^{11323503061721} is an apocalyptic number.

It is an amenable number.

11323503061721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11323503061721 is an equidigital number, since it uses as much as digits as its factorization.

11323503061721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 11323503061721 in words is "eleven trillion, three hundred twenty-three billion, five hundred three million, sixty-one thousand, seven hundred twenty-one".