13530544541 has 4 divisors (see below), whose sum is σ = 13896234972. Its totient is φ = 13164854112.

The previous prime is 13530544483. The next prime is 13530544543. The reversal of 13530544541 is 14544503531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12852983641 + 677560900 = 113371^2 + 26030^2 .

It is a cyclic number.

It is not a de Polignac number, because 13530544541 - 2¹⁸ = 13530282397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530544543) 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, 182845160 + ... + 182845233.

It is an arithmetic number, because the mean of its divisors is an integer number (3474058743).

Almost surely, 2^13530544541 is an apocalyptic number.

It is an amenable number.

13530544541 is a deficient number, since it is larger than the sum of its proper divisors (365690431).

13530544541 is an equidigital number, since it uses as much as digits as its factorization.

13530544541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365690430.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 13530544541 in words is "thirteen billion, five hundred thirty million, five hundred forty-four thousand, five hundred forty-one".