1326489945480 has 512 divisors, whose sum is σ = 5165593804800. Its totient is φ = 300239758080.

The previous prime is 1326489945467. The next prime is 1326489945499. The reversal of 1326489945480 is 845499846231.

1326489945480 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 4 + 89 + 9 + 4 + 548 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 63062565 + ... + 63083595.

It is an arithmetic number, because the mean of its divisors is an integer number (10089050400).

Almost surely, 2^{1326489945480} is an apocalyptic number.

1326489945480 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 1326489945480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2582796902400).

1326489945480 is an abundant number, since it is smaller than the sum of its proper divisors (3839103859320).

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

1326489945480 is a wasteful number, since it uses less digits than its factorization.

1326489945480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21173 (or 21151 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 63.

The spelling of 1326489945480 in words is "one trillion, three hundred twenty-six billion, four hundred eighty-nine million, nine hundred forty-five thousand, four hundred eighty".