1320533315320 has 32 divisors (see below), whose sum is σ = 2971245658320. Its totient is φ = 528205201920.

The previous prime is 1320533315267. The next prime is 1320533315347. The reversal of 1320533315320 is 235133350231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846839 + ... + 3278041.

Almost surely, 2^{1320533315320} is an apocalyptic number.

1320533315320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320533315320 is an abundant number, since it is smaller than the sum of its proper divisors (1650712343000).

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

1320533315320 is a wasteful number, since it uses less digits than its factorization.

1320533315320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507775 (or 507771 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 31.

Adding to 1320533315320 its reverse (235133350231), we get a palindrome (1555666665551).

The spelling of 1320533315320 in words is "one trillion, three hundred twenty billion, five hundred thirty-three million, three hundred fifteen thousand, three hundred twenty".