1323216364540 has 48 divisors (see below), whose sum is σ = 3208458681792. Its totient is φ = 448997124096.

The previous prime is 1323216364513. The next prime is 1323216364543. The reversal of 1323216364540 is 454636123231.

It is a junction number, because it is equal to n+sod(n) for n = 1323216364493 and 1323216364502.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48705727 + ... + 48732886.

It is an arithmetic number, because the mean of its divisors is an integer number (66842889204).

Almost surely, 2^{1323216364540} is an apocalyptic number.

1323216364540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323216364540 is an abundant number, since it is smaller than the sum of its proper divisors (1885242317252).

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

1323216364540 is a wasteful number, since it uses less digits than its factorization.

1323216364540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97438726 (or 97438724 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 1323216364540 in words is "one trillion, three hundred twenty-three billion, two hundred sixteen million, three hundred sixty-four thousand, five hundred forty".