11366419621 has 2 divisors, whose sum is σ = 11366419622. Its totient is φ = 11366419620.

The previous prime is 11366419583. The next prime is 11366419633. The reversal of 11366419621 is 12691466311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10985974596 + 380445025 = 104814^2 + 19505^2 .

It is a cyclic number.

It is not a de Polignac number, because 11366419621 - 2²⁵ = 11332865189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11366410621) 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, 5683209810 + 5683209811.

It is an arithmetic number, because the mean of its divisors is an integer number (5683209811).

Almost surely, 2^11366419621 is an apocalyptic number.

It is an amenable number.

11366419621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11366419621 is an equidigital number, since it uses as much as digits as its factorization.

11366419621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The spelling of 11366419621 in words is "eleven billion, three hundred sixty-six million, four hundred nineteen thousand, six hundred twenty-one".