13220653145523 has 8 divisors (see below), whose sum is σ = 18103957460688. Its totient is φ = 8575558797024.

The previous prime is 13220653145473. The next prime is 13220653145527. The reversal of 13220653145523 is 32554135602231.

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

It is not a de Polignac number, because 13220653145523 - 2⁸ = 13220653145267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13220653145527) 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, 59552491536 + ... + 59552491757.

It is an arithmetic number, because the mean of its divisors is an integer number (2262994682586).

Almost surely, 2^{13220653145523} is an apocalyptic number.

13220653145523 is a deficient number, since it is larger than the sum of its proper divisors (4883304315165).

13220653145523 is a wasteful number, since it uses less digits than its factorization.

13220653145523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119104983333.

The product of its (nonzero) digits is 648000, while the sum is 42.

Adding to 13220653145523 its reverse (32554135602231), we get a palindrome (45774788747754).

The spelling of 13220653145523 in words is "thirteen trillion, two hundred twenty billion, six hundred fifty-three million, one hundred forty-five thousand, five hundred twenty-three".