11573721048 has 32 divisors (see below), whose sum is σ = 29549928960. Its totient is φ = 3775823520.

The previous prime is 11573721013. The next prime is 11573721059. The reversal of 11573721048 is 84012737511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11573720997 and 11573721015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5129068 + ... + 5131323.

It is an arithmetic number, because the mean of its divisors is an integer number (923435280).

Almost surely, 2^11573721048 is an apocalyptic number.

It is an amenable number.

11573721048 is an abundant number, since it is smaller than the sum of its proper divisors (17976207912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11573721048 is a wasteful number, since it uses less digits than its factorization.

11573721048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260447 (or 10260443 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The spelling of 11573721048 in words is "eleven billion, five hundred seventy-three million, seven hundred twenty-one thousand, forty-eight".