1320389540316 has 576 divisors, whose sum is σ = 4490151644160. Its totient is φ = 329204736000.

The previous prime is 1320389540297. The next prime is 1320389540339. The reversal of 1320389540316 is 6130459830231.

1320389540316 is a `hidden beast` number, since 1 + 3 + 20 + 3 + 89 + 540 + 3 + 1 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 392854476 + ... + 392857836.

It is an arithmetic number, because the mean of its divisors is an integer number (7795402160).

Almost surely, 2^{1320389540316} 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 1320389540316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245075822080).

1320389540316 is an abundant number, since it is smaller than the sum of its proper divisors (3169762103844).

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

1320389540316 is a wasteful number, since it uses less digits than its factorization.

1320389540316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 3594 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 1320389540316 in words is "one trillion, three hundred twenty billion, three hundred eighty-nine million, five hundred forty thousand, three hundred sixteen".