13231522011655 has 16 divisors (see below), whose sum is σ = 16834443223104. Its totient is φ = 9949149145600.

The previous prime is 13231522011529. The next prime is 13231522011667. The reversal of 13231522011655 is 55611022513231.

It is not a de Polignac number, because 13231522011655 - 2¹⁷ = 13231521880583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104691196 + ... + 104817505.

It is an arithmetic number, because the mean of its divisors is an integer number (1052152701444).

Almost surely, 2^{13231522011655} is an apocalyptic number.

13231522011655 is a deficient number, since it is larger than the sum of its proper divisors (3602921211449).

13231522011655 is a wasteful number, since it uses less digits than its factorization.

13231522011655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209509466.

The product of its (nonzero) digits is 54000, while the sum is 37.

Adding to 13231522011655 its reverse (55611022513231), we get a palindrome (68842544524886).

The spelling of 13231522011655 in words is "thirteen trillion, two hundred thirty-one billion, five hundred twenty-two million, eleven thousand, six hundred fifty-five".