13544213520 has 80 divisors (see below), whose sum is σ = 41999008320. Its totient is φ = 3610762752.

The previous prime is 13544213489. The next prime is 13544213521. The reversal of 13544213520 is 2531244531.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (13544213521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1241851 + ... + 1252709.

It is an arithmetic number, because the mean of its divisors is an integer number (524987604).

Almost surely, 2^13544213520 is an apocalyptic number.

13544213520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13544213520 is an abundant number, since it is smaller than the sum of its proper divisors (28454794800).

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

13544213520 is a wasteful number, since it uses less digits than its factorization.

13544213520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16072 (or 16066 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 13544213520 in words is "thirteen billion, five hundred forty-four million, two hundred thirteen thousand, five hundred twenty".