11575551843 has 12 divisors (see below), whose sum is σ = 16766820720. Its totient is φ = 7695536496.

The previous prime is 11575551809. The next prime is 11575551881. The reversal of 11575551843 is 34815557511.

11575551843 is a `hidden beast` number, since 1 + 1 + 57 + 5 + 551 + 8 + 43 = 666.

It is not a de Polignac number, because 11575551843 - 2⁸ = 11575551587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11575558843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1788096 + ... + 1794557.

It is an arithmetic number, because the mean of its divisors is an integer number (1397235060).

Almost surely, 2^11575551843 is an apocalyptic number.

11575551843 is a deficient number, since it is larger than the sum of its proper divisors (5191268877).

11575551843 is a wasteful number, since it uses less digits than its factorization.

11575551843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583018 (or 3583015 counting only the distinct ones).

The product of its digits is 420000, while the sum is 45.

The spelling of 11575551843 in words is "eleven billion, five hundred seventy-five million, five hundred fifty-one thousand, eight hundred forty-three".