13520541545 has 32 divisors (see below), whose sum is σ = 18620236800. Its totient is φ = 9232445376.

The previous prime is 13520541523. The next prime is 13520541547. The reversal of 13520541545 is 54514502531.

It is not a de Polignac number, because 13520541545 - 2²² = 13516347241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (13520541547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14276762 + ... + 14277708.

It is an arithmetic number, because the mean of its divisors is an integer number (581882400).

Almost surely, 2^13520541545 is an apocalyptic number.

It is an amenable number.

13520541545 is a deficient number, since it is larger than the sum of its proper divisors (5099695255).

13520541545 is an equidigital number, since it uses as much as digits as its factorization.

13520541545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 13520541545 in words is "thirteen billion, five hundred twenty million, five hundred forty-one thousand, five hundred forty-five".