11553357209 has 2 divisors, whose sum is σ = 11553357210. Its totient is φ = 11553357208.

The previous prime is 11553357181. The next prime is 11553357229. The reversal of 11553357209 is 90275335511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8878915984 + 2674441225 = 94228^2 + 51715^2 .

It is a cyclic number.

It is not a de Polignac number, because 11553357209 - 2¹² = 11553353113 is a prime.

It is not a weakly prime, because it can be changed into another prime (11553357229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776678604 + 5776678605.

It is an arithmetic number, because the mean of its divisors is an integer number (5776678605).

Almost surely, 2^11553357209 is an apocalyptic number.

It is an amenable number.

11553357209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11553357209 is an equidigital number, since it uses as much as digits as its factorization.

11553357209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 41.

The spelling of 11553357209 in words is "eleven billion, five hundred fifty-three million, three hundred fifty-seven thousand, two hundred nine".