13155122506 has 32 divisors (see below), whose sum is σ = 20798311680. Its totient is φ = 6231422400.

The previous prime is 13155122503. The next prime is 13155122531. The reversal of 13155122506 is 60522155131.

It is not an unprimeable number, because it can be changed into a prime (13155122503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1520565 + ... + 1529191.

It is an arithmetic number, because the mean of its divisors is an integer number (649947240).

Almost surely, 2^13155122506 is an apocalyptic number.

13155122506 is a deficient number, since it is larger than the sum of its proper divisors (7643189174).

13155122506 is a wasteful number, since it uses less digits than its factorization.

13155122506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 13155122506 its reverse (60522155131), we get a palindrome (73677277637).

The spelling of 13155122506 in words is "thirteen billion, one hundred fifty-five million, one hundred twenty-two thousand, five hundred six".