11521644522 has 8 divisors (see below), whose sum is σ = 23043289056. Its totient is φ = 3840548172.

The previous prime is 11521644521. The next prime is 11521644527. The reversal of 11521644522 is 22544612511.

It is a happy number.

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

11521644522 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11521644521) 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, 960137038 + ... + 960137049.

It is an arithmetic number, because the mean of its divisors is an integer number (2880411132).

Almost surely, 2^11521644522 is an apocalyptic number.

11521644522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11521644522 is a wasteful number, since it uses less digits than its factorization.

11521644522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920274092.

The product of its digits is 19200, while the sum is 33.

The spelling of 11521644522 in words is "eleven billion, five hundred twenty-one million, six hundred forty-four thousand, five hundred twenty-two".