11583284821 has 2 divisors, whose sum is σ = 11583284822. Its totient is φ = 11583284820.

The previous prime is 11583284813. The next prime is 11583284833. The reversal of 11583284821 is 12848238511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10406040100 + 1177244721 = 102010^2 + 34311^2 .

It is a cyclic number.

It is not a de Polignac number, because 11583284821 - 2³ = 11583284813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11583284851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5791642410 + 5791642411.

It is an arithmetic number, because the mean of its divisors is an integer number (5791642411).

Almost surely, 2^11583284821 is an apocalyptic number.

It is an amenable number.

11583284821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11583284821 is an equidigital number, since it uses as much as digits as its factorization.

11583284821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 43.

The spelling of 11583284821 in words is "eleven billion, five hundred eighty-three million, two hundred eighty-four thousand, eight hundred twenty-one".