13530205545 has 8 divisors (see below), whose sum is σ = 21648328896. Its totient is φ = 7216109616.

The previous prime is 13530205517. The next prime is 13530205553. The reversal of 13530205545 is 54550203531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13530205545 - 2¹⁷ = 13530074473 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451006837 + ... + 451006866.

It is an arithmetic number, because the mean of its divisors is an integer number (2706041112).

Almost surely, 2^13530205545 is an apocalyptic number.

13530205545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13530205545 is a deficient number, since it is larger than the sum of its proper divisors (8118123351).

13530205545 is an equidigital number, since it uses as much as digits as its factorization.

13530205545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902013711.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 13530205545 in words is "thirteen billion, five hundred thirty million, two hundred five thousand, five hundred forty-five".