1323216364541 has 4 divisors (see below), whose sum is σ = 1331334256512. Its totient is φ = 1315098472572.

The previous prime is 1323216364513. The next prime is 1323216364543. The reversal of 1323216364541 is 1454636123231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1323216364541 - 2¹⁰ = 1323216363517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323216364543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4058945741 + ... + 4058946066.

It is an arithmetic number, because the mean of its divisors is an integer number (332833564128).

Almost surely, 2^{1323216364541} is an apocalyptic number.

It is an amenable number.

1323216364541 is a deficient number, since it is larger than the sum of its proper divisors (8117891971).

1323216364541 is an equidigital number, since it uses as much as digits as its factorization.

1323216364541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8117891970.

The product of its digits is 311040, while the sum is 41.

The spelling of 1323216364541 in words is "one trillion, three hundred twenty-three billion, two hundred sixteen million, three hundred sixty-four thousand, five hundred forty-one".