447432141536643 has 4 divisors (see below), whose sum is σ = 596576188715528. Its totient is φ = 298288094357760.

The previous prime is 447432141536617. The next prime is 447432141536669. The reversal of 447432141536643 is 346635141234744.

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

It is an interprime number because it is at equal distance from previous prime (447432141536617) and next prime (447432141536669).

It is not a de Polignac number, because 447432141536643 - 2¹⁸ = 447432141274499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447432141536683) 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, 74572023589438 + ... + 74572023589443.

It is an arithmetic number, because the mean of its divisors is an integer number (149144047178882).

Almost surely, 2^{447432141536643} is an apocalyptic number.

447432141536643 is a deficient number, since it is larger than the sum of its proper divisors (149144047178885).

447432141536643 is a wasteful number, since it uses less digits than its factorization.

447432141536643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149144047178884.

The product of its digits is 69672960, while the sum is 57.

The spelling of 447432141536643 in words is "four hundred forty-seven trillion, four hundred thirty-two billion, one hundred forty-one million, five hundred thirty-six thousand, six hundred forty-three".