447142236547 has 4 divisors (see below), whose sum is σ = 447295527856. Its totient is φ = 446988945240.

The previous prime is 447142236521. The next prime is 447142236553. The reversal of 447142236547 is 745632241744.

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 447142236547 - 2³¹ = 444994752899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447142236547.

It is not an unprimeable number, because it can be changed into a prime (447142236647) 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, 76641279 + ... + 76647112.

It is an arithmetic number, because the mean of its divisors is an integer number (111823881964).

Almost surely, 2^447142236547 is an apocalyptic number.

447142236547 is a deficient number, since it is larger than the sum of its proper divisors (153291309).

447142236547 is a wasteful number, since it uses less digits than its factorization.

447142236547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153291308.

The product of its digits is 4515840, while the sum is 49.

The spelling of 447142236547 in words is "four hundred forty-seven billion, one hundred forty-two million, two hundred thirty-six thousand, five hundred forty-seven".