11557742326 has 8 divisors (see below), whose sum is σ = 18670199184. Its totient is φ = 5334342600.

The previous prime is 11557742323. The next prime is 11557742327. The reversal of 11557742326 is 62324775511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557742321) 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, 222264250 + ... + 222264301.

It is an arithmetic number, because the mean of its divisors is an integer number (2333774898).

Almost surely, 2^11557742326 is an apocalyptic number.

11557742326 is a deficient number, since it is larger than the sum of its proper divisors (7112456858).

11557742326 is a wasteful number, since it uses less digits than its factorization.

11557742326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444528566.

The product of its digits is 352800, while the sum is 43.

The spelling of 11557742326 in words is "eleven billion, five hundred fifty-seven million, seven hundred forty-two thousand, three hundred twenty-six".