11453433660421 has 2 divisors, whose sum is σ = 11453433660422. Its totient is φ = 11453433660420.

The previous prime is 11453433660391. The next prime is 11453433660437. The reversal of 11453433660421 is 12406633435411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8196711740100 + 3256721920321 = 2862990^2 + 1804639^2 .

It is an emirp because it is prime and its reverse (12406633435411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11453433660421 - 2⁹ = 11453433659909 is a prime.

It is a super-2 number, since 2×11453433660421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11453433660521) 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 as a sum of consecutive naturals, namely, 5726716830210 + 5726716830211.

It is an arithmetic number, because the mean of its divisors is an integer number (5726716830211).

Almost surely, 2^{11453433660421} is an apocalyptic number.

It is an amenable number.

11453433660421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11453433660421 is an equidigital number, since it uses as much as digits as its factorization.

11453433660421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 11453433660421 in words is "eleven trillion, four hundred fifty-three billion, four hundred thirty-three million, six hundred sixty thousand, four hundred twenty-one".