13530253445 has 16 divisors (see below), whose sum is σ = 16278900480.
Its totient is φ = 10795848000.
The previous prime is 13530253441. The next prime is 13530253487. The reversal of 13530253445 is 54435203531.
Adding to 13530253445 its reverse (54435203531), we get a palindrome (67965456976).
It is a happy number.
It is not a de Polignac number, because 13530253445 - 22 = 13530253441 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13530253441) 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, 3776555 + ... + 3780135.
It is an arithmetic number, because the mean of its divisors is an integer number (1017431280).
Almost surely, 213530253445 is an apocalyptic number.
It is an amenable number.
13530253445 is a deficient number, since it is larger than the sum of its proper divisors (2748647035).
13530253445 is a wasteful number, since it uses less digits than its factorization.
13530253445 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5356.
The product of its (nonzero) digits is 108000, while the sum is 35.
The spelling of 13530253445 in words is "thirteen billion, five hundred thirty million, two hundred fifty-three thousand, four hundred forty-five".