13515544655 has 8 divisors (see below), whose sum is σ = 16237539600. Its totient is φ = 10799845056.

The previous prime is 13515544643. The next prime is 13515544733. The reversal of 13515544655 is 55644551531.

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

It is a cyclic number.

It is not a de Polignac number, because 13515544655 - 2¹⁶ = 13515479119 is a prime.

It is a congruent 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, 1569110 + ... + 1577699.

It is an arithmetic number, because the mean of its divisors is an integer number (2029692450).

Almost surely, 2^13515544655 is an apocalyptic number.

13515544655 is a deficient number, since it is larger than the sum of its proper divisors (2721994945).

13515544655 is an equidigital number, since it uses as much as digits as its factorization.

13515544655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147673.

The product of its digits is 900000, while the sum is 44.

The spelling of 13515544655 in words is "thirteen billion, five hundred fifteen million, five hundred forty-four thousand, six hundred fifty-five".