1326875543663 has 4 divisors (see below), whose sum is σ = 1330699392840. Its totient is φ = 1323051694488.

The previous prime is 1326875543657. The next prime is 1326875543677. The reversal of 1326875543663 is 3663455786231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1326875543663 - 2⁶ = 1326875543599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326875543363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911924068 + ... + 1911924761.

It is an arithmetic number, because the mean of its divisors is an integer number (332674848210).

Almost surely, 2^{1326875543663} is an apocalyptic number.

1326875543663 is a deficient number, since it is larger than the sum of its proper divisors (3823849177).

1326875543663 is an equidigital number, since it uses as much as digits as its factorization.

1326875543663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823849176.

The product of its digits is 65318400, while the sum is 59.

The spelling of 1326875543663 in words is "one trillion, three hundred twenty-six billion, eight hundred seventy-five million, five hundred forty-three thousand, six hundred sixty-three".