321242613155 has 4 divisors (see below), whose sum is σ = 385491135792. Its totient is φ = 256994090520.

The previous prime is 321242613113. The next prime is 321242613163. The reversal of 321242613155 is 551316242123.

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

It is not a de Polignac number, because 321242613155 - 2⁶ = 321242613091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32124261311 + ... + 32124261320.

It is an arithmetic number, because the mean of its divisors is an integer number (96372783948).

Almost surely, 2^321242613155 is an apocalyptic number.

321242613155 is a deficient number, since it is larger than the sum of its proper divisors (64248522637).

321242613155 is an equidigital number, since it uses as much as digits as its factorization.

321242613155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64248522636.

The product of its digits is 43200, while the sum is 35.

Adding to 321242613155 its reverse (551316242123), we get a palindrome (872558855278).

The spelling of 321242613155 in words is "three hundred twenty-one billion, two hundred forty-two million, six hundred thirteen thousand, one hundred fifty-five".