11057232509 has 2 divisors, whose sum is σ = 11057232510. Its totient is φ = 11057232508.

The previous prime is 11057232481. The next prime is 11057232541. The reversal of 11057232509 is 90523275011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10966697284 + 90535225 = 104722^2 + 9515^2 .

It is a cyclic number.

It is not a de Polignac number, because 11057232509 - 2¹⁶ = 11057166973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11057232569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528616254 + 5528616255.

It is an arithmetic number, because the mean of its divisors is an integer number (5528616255).

Almost surely, 2^11057232509 is an apocalyptic number.

It is an amenable number.

11057232509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11057232509 is an equidigital number, since it uses as much as digits as its factorization.

11057232509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 11057232509 in words is "eleven billion, fifty-seven million, two hundred thirty-two thousand, five hundred nine".