1320324635904 has 108 divisors (see below), whose sum is σ = 3562796293056. Its totient is φ = 434077986816.

The previous prime is 1320324635813. The next prime is 1320324635921. The reversal of 1320324635904 is 4095364230231.

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, 3931369 + ... + 4253975.

Almost surely, 2^{1320324635904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320324635904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781398146528).

1320324635904 is an abundant number, since it is smaller than the sum of its proper divisors (2242471657152).

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

1320324635904 is an frugal number, since it uses more digits than its factorization.

1320324635904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322772 (or 322685 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 1320324635904 in words is "one trillion, three hundred twenty billion, three hundred twenty-four million, six hundred thirty-five thousand, nine hundred four".