11557533239 has 4 divisors (see below), whose sum is σ = 13208609424. Its totient is φ = 9906457056.

The previous prime is 11557533227. The next prime is 11557533269. The reversal of 11557533239 is 93233575511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93233575511 = 32027 ⋅2911093.

It is a cyclic number.

It is not a de Polignac number, because 11557533239 - 2⁴ = 11557533223 is a prime.

It is a super-2 number, since 2×11557533239² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11557533239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557533269) 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 in 3 ways as a sum of consecutive naturals, for example, 825538082 + ... + 825538095.

It is an arithmetic number, because the mean of its divisors is an integer number (3302152356).

Almost surely, 2^11557533239 is an apocalyptic number.

11557533239 is a deficient number, since it is larger than the sum of its proper divisors (1651076185).

11557533239 is an equidigital number, since it uses as much as digits as its factorization.

11557533239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651076184.

The product of its digits is 425250, while the sum is 44.

The spelling of 11557533239 in words is "eleven billion, five hundred fifty-seven million, five hundred thirty-three thousand, two hundred thirty-nine".