13155442557 has 8 divisors (see below), whose sum is σ = 17541482784. Its totient is φ = 8769848688.

The previous prime is 13155442519. The next prime is 13155442561. The reversal of 13155442557 is 75524455131.

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

It is not a de Polignac number, because 13155442557 - 2²⁶ = 13088333693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155442507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35383 + ... + 166020.

It is an arithmetic number, because the mean of its divisors is an integer number (2192685348).

Almost surely, 2^13155442557 is an apocalyptic number.

It is an amenable number.

13155442557 is a deficient number, since it is larger than the sum of its proper divisors (4386040227).

13155442557 is a wasteful number, since it uses less digits than its factorization.

13155442557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223179.

The product of its digits is 420000, while the sum is 42.

Adding to 13155442557 its reverse (75524455131), we get a palindrome (88679897688).

The spelling of 13155442557 in words is "thirteen billion, one hundred fifty-five million, four hundred forty-two thousand, five hundred fifty-seven".