1320386335488 has 432 divisors, whose sum is σ = 4261961733120. Its totient is φ = 389663539200.

The previous prime is 1320386335481. The next prime is 1320386335519. The reversal of 1320386335488 is 8845336830231.

It is a happy number.

1320386335488 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 38 + 63 + 3 + 548 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1320386335481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1079628445 + ... + 1079629667.

It is an arithmetic number, because the mean of its divisors is an integer number (9865652160).

Almost surely, 2^{1320386335488} is an apocalyptic number.

1320386335488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320386335488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2130980866560).

1320386335488 is an abundant number, since it is smaller than the sum of its proper divisors (2941575397632).

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

1320386335488 is a wasteful number, since it uses less digits than its factorization.

1320386335488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 1320386335488 in words is "one trillion, three hundred twenty billion, three hundred eighty-six million, three hundred thirty-five thousand, four hundred eighty-eight".