1443642645171 has 16 divisors (see below), whose sum is σ = 1929759772320. Its totient is φ = 959977455360.

The previous prime is 1443642645161. The next prime is 1443642645209. The reversal of 1443642645171 is 1715462463441.

It is a happy number.

It is not a de Polignac number, because 1443642645171 - 2⁵ = 1443642645139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1443642645171.

It is not an unprimeable number, because it can be changed into a prime (1443642645161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13173721 + ... + 13282853.

It is an arithmetic number, because the mean of its divisors is an integer number (120609985770).

Almost surely, 2^{1443642645171} is an apocalyptic number.

1443642645171 is a deficient number, since it is larger than the sum of its proper divisors (486117127149).

1443642645171 is a wasteful number, since it uses less digits than its factorization.

1443642645171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120326.

The product of its digits is 1935360, while the sum is 48.

The spelling of 1443642645171 in words is "one trillion, four hundred forty-three billion, six hundred forty-two million, six hundred forty-five thousand, one hundred seventy-one".