11143562621 has 2 divisors, whose sum is σ = 11143562622. Its totient is φ = 11143562620.

The previous prime is 11143562597. The next prime is 11143562663. The reversal of 11143562621 is 12626534111.

11143562621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8185725625 + 2957836996 = 90475^2 + 54386^2 .

It is a cyclic number.

It is not a de Polignac number, because 11143562621 - 2²⁶ = 11076453757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11143562821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5571781310 + 5571781311.

It is an arithmetic number, because the mean of its divisors is an integer number (5571781311).

Almost surely, 2^11143562621 is an apocalyptic number.

It is an amenable number.

11143562621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11143562621 is an equidigital number, since it uses as much as digits as its factorization.

11143562621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The spelling of 11143562621 in words is "eleven billion, one hundred forty-three million, five hundred sixty-two thousand, six hundred twenty-one".