11042521553 has 16 divisors (see below), whose sum is σ = 12709186560. Its totient is φ = 9398256336.

The previous prime is 11042521531. The next prime is 11042521571. The reversal of 11042521553 is 35512524011.

It is not a de Polignac number, because 11042521553 - 2⁶ = 11042521489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11042521453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1432676 + ... + 1440362.

It is an arithmetic number, because the mean of its divisors is an integer number (794324160).

Almost surely, 2^11042521553 is an apocalyptic number.

It is an amenable number.

11042521553 is a deficient number, since it is larger than the sum of its proper divisors (1666665007).

11042521553 is a wasteful number, since it uses less digits than its factorization.

11042521553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9116.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 11042521553 in words is "eleven billion, forty-two million, five hundred twenty-one thousand, five hundred fifty-three".