1320555450000 has 240 divisors, whose sum is σ = 4333952734272. Its totient is φ = 346372800000.

The previous prime is 1320555449989. The next prime is 1320555450077. The reversal of 1320555450000 is 545550231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 1320555450000.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9077839 + ... + 9222161.

Almost surely, 2^{1320555450000} is an apocalyptic number.

1320555450000 is a gapful number since it is divisible by the number (10) 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 1320555450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2166976367136).

1320555450000 is an abundant number, since it is smaller than the sum of its proper divisors (3013397284272).

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

1320555450000 is an equidigital number, since it uses as much as digits as its factorization.

1320555450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144420 (or 144394 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 1320555450000 in words is "one trillion, three hundred twenty billion, five hundred fifty-five million, four hundred fifty thousand".