13545113515 has 4 divisors (see below), whose sum is σ = 16254136224. Its totient is φ = 10836090808.

The previous prime is 13545113497. The next prime is 13545113521. The reversal of 13545113515 is 51531154531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51531154531 = 419 ⋅122986049.

It is a cyclic number.

It is not a de Polignac number, because 13545113515 - 2⁹ = 13545113003 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354511347 + ... + 1354511356.

It is an arithmetic number, because the mean of its divisors is an integer number (4063534056).

Almost surely, 2^13545113515 is an apocalyptic number.

13545113515 is a deficient number, since it is larger than the sum of its proper divisors (2709022709).

13545113515 is an equidigital number, since it uses as much as digits as its factorization.

13545113515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709022708.

The product of its digits is 22500, while the sum is 34.

The spelling of 13545113515 in words is "thirteen billion, five hundred forty-five million, one hundred thirteen thousand, five hundred fifteen".