11557313833 has 4 divisors (see below), whose sum is σ = 12446337988. Its totient is φ = 10668289680.

The previous prime is 11557313797. The next prime is 11557313843. The reversal of 11557313833 is 33831375511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1260747049 + 10296566784 = 35507^2 + 101472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11557313833 is a prime.

It is a super-3 number, since 3×11557313833³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11557313843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444512058 + ... + 444512083.

It is an arithmetic number, because the mean of its divisors is an integer number (3111584497).

Almost surely, 2^11557313833 is an apocalyptic number.

11557313833 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11557313833 is a deficient number, since it is larger than the sum of its proper divisors (889024155).

11557313833 is an equidigital number, since it uses as much as digits as its factorization.

11557313833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889024154.

The product of its digits is 113400, while the sum is 40.

The spelling of 11557313833 in words is "eleven billion, five hundred fifty-seven million, three hundred thirteen thousand, eight hundred thirty-three".