1320257044480 has 120 divisors (see below), whose sum is σ = 3456569859120. Its totient is φ = 480093143040.

The previous prime is 1320257044459. The next prime is 1320257044517. The reversal of 1320257044480 is 844407520231.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 168556 + ... + 1633684.

It is an arithmetic number, because the mean of its divisors is an integer number (28804748826).

Almost surely, 2^{1320257044480} is an apocalyptic number.

1320257044480 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 1320257044480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728284929560).

1320257044480 is an abundant number, since it is smaller than the sum of its proper divisors (2136312814640).

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

1320257044480 is an equidigital number, since it uses as much as digits as its factorization.

1320257044480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465173 (or 1465147 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 1320257044480 in words is "one trillion, three hundred twenty billion, two hundred fifty-seven million, forty-four thousand, four hundred eighty".