1326875543664 has 240 divisors, whose sum is σ = 3853277957760. Its totient is φ = 393043622400.

The previous prime is 1326875543657. The next prime is 1326875543677. The reversal of 1326875543664 is 4663455786231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1326875543598 and 1326875543607.

It is a congruent number.

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, 50963802 + ... + 50989830.

It is an arithmetic number, because the mean of its divisors is an integer number (16055324824).

Almost surely, 2^{1326875543664} 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 1326875543664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1926638978880).

1326875543664 is an abundant number, since it is smaller than the sum of its proper divisors (2526402414096).

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

1326875543664 is a wasteful number, since it uses less digits than its factorization.

1326875543664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26260 (or 26243 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 60.

The spelling of 1326875543664 in words is "one trillion, three hundred twenty-six billion, eight hundred seventy-five million, five hundred forty-three thousand, six hundred sixty-four".