2321551301216 has 72 divisors (see below), whose sum is σ = 5629518109656. Its totient is φ = 936424043520.

The previous prime is 2321551301197. The next prime is 2321551301227. The reversal of 2321551301216 is 6121031551232.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 43519850 + ... + 43573161.

It is an arithmetic number, because the mean of its divisors is an integer number (78187751523).

Almost surely, 2^{2321551301216} is an apocalyptic number.

It is an amenable number.

2321551301216 is an abundant number, since it is smaller than the sum of its proper divisors (3307966808440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2321551301216 is a wasteful number, since it uses less digits than its factorization.

2321551301216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87093052 (or 87093037 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 2321551301216 its reverse (6121031551232), we get a palindrome (8442582852448).

The spelling of 2321551301216 in words is "two trillion, three hundred twenty-one billion, five hundred fifty-one million, three hundred one thousand, two hundred sixteen".