1326540446443 has 4 divisors (see below), whose sum is σ = 1332090825120. Its totient is φ = 1320990067768.

The previous prime is 1326540446437. The next prime is 1326540446519. The reversal of 1326540446443 is 3446440456231.

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 1326540446443 - 2³³ = 1317950511851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1326540446393 and 1326540446402.

It is not an unprimeable number, because it can be changed into a prime (1326540440443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775188980 + ... + 2775189457.

It is an arithmetic number, because the mean of its divisors is an integer number (333022706280).

Almost surely, 2^{1326540446443} is an apocalyptic number.

1326540446443 is a deficient number, since it is larger than the sum of its proper divisors (5550378677).

1326540446443 is an equidigital number, since it uses as much as digits as its factorization.

1326540446443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550378676.

The product of its (nonzero) digits is 3317760, while the sum is 46.

The spelling of 1326540446443 in words is "one trillion, three hundred twenty-six billion, five hundred forty million, four hundred forty-six thousand, four hundred forty-three".