447548767478 has 4 divisors (see below), whose sum is σ = 671323151220. Its totient is φ = 223774383738.

The previous prime is 447548767439. The next prime is 447548767487. The reversal of 447548767478 is 874767845744.

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

It is a congruent number.

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 as a sum of consecutive naturals, namely, 111887191868 + ... + 111887191871.

It is an arithmetic number, because the mean of its divisors is an integer number (167830787805).

Almost surely, 2^447548767478 is an apocalyptic number.

447548767478 is a deficient number, since it is larger than the sum of its proper divisors (223774383742).

447548767478 is a wasteful number, since it uses less digits than its factorization.

447548767478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223774383741.

The product of its digits is 1180139520, while the sum is 71.

The spelling of 447548767478 in words is "four hundred forty-seven billion, five hundred forty-eight million, seven hundred sixty-seven thousand, four hundred seventy-eight".