13013042555 has 4 divisors (see below), whose sum is σ = 15615651072. Its totient is φ = 10410434040.

The previous prime is 13013042551. The next prime is 13013042569. The reversal of 13013042555 is 55524031031.

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

It is not a de Polignac number, because 13013042555 - 2² = 13013042551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13013042551) 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, 1301304251 + ... + 1301304260.

It is an arithmetic number, because the mean of its divisors is an integer number (3903912768).

Almost surely, 2^13013042555 is an apocalyptic number.

13013042555 is a deficient number, since it is larger than the sum of its proper divisors (2602608517).

13013042555 is an equidigital number, since it uses as much as digits as its factorization.

13013042555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602608516.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 13013042555 its reverse (55524031031), we get a palindrome (68537073586).

The spelling of 13013042555 in words is "thirteen billion, thirteen million, forty-two thousand, five hundred fifty-five".