13211542544 has 20 divisors (see below), whose sum is σ = 25957892160. Its totient is φ = 6512731680.

The previous prime is 13211542541. The next prime is 13211542559. The reversal of 13211542544 is 44524511231.

It is a self number, because there is not a number n which added to its sum of digits gives 13211542544.

It is not an unprimeable number, because it can be changed into a prime (13211542541) 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, 5813804 + ... + 5816075.

It is an arithmetic number, because the mean of its divisors is an integer number (1297894608).

Almost surely, 2^13211542544 is an apocalyptic number.

It is an amenable number.

13211542544 is a deficient number, since it is larger than the sum of its proper divisors (12746349616).

13211542544 is a wasteful number, since it uses less digits than its factorization.

13211542544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11629958 (or 11629952 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The spelling of 13211542544 in words is "thirteen billion, two hundred eleven million, five hundred forty-two thousand, five hundred forty-four".