1443641645426 has 32 divisors (see below), whose sum is σ = 2337947400960. Its totient is φ = 666510289984.

The previous prime is 1443641645387. The next prime is 1443641645431. The reversal of 1443641645426 is 6245461463441.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7620956 + ... + 7808088.

It is an arithmetic number, because the mean of its divisors is an integer number (73060856280).

Almost surely, 2^{1443641645426} is an apocalyptic number.

1443641645426 is a deficient number, since it is larger than the sum of its proper divisors (894305755534).

1443641645426 is a wasteful number, since it uses less digits than its factorization.

1443641645426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192970.

The product of its digits is 6635520, while the sum is 50.

The spelling of 1443641645426 in words is "one trillion, four hundred forty-three billion, six hundred forty-one million, six hundred forty-five thousand, four hundred twenty-six".