13542011521 has 16 divisors (see below), whose sum is σ = 14605418880. Its totient is φ = 12508957440.

The previous prime is 13542011513. The next prime is 13542011551. The reversal of 13542011521 is 12511024531.

It is a cyclic number.

It is not a de Polignac number, because 13542011521 - 2³ = 13542011513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13542011501) 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, 622195 + ... + 643591.

It is an arithmetic number, because the mean of its divisors is an integer number (912838680).

Almost surely, 2^13542011521 is an apocalyptic number.

It is an amenable number.

13542011521 is a deficient number, since it is larger than the sum of its proper divisors (1063407359).

13542011521 is a wasteful number, since it uses less digits than its factorization.

13542011521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22104.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 13542011521 in words is "thirteen billion, five hundred forty-two million, eleven thousand, five hundred twenty-one".