478818911854 has 4 divisors (see below), whose sum is σ = 718228367784. Its totient is φ = 239409455926.

The previous prime is 478818911849. The next prime is 478818911867. The reversal of 478818911854 is 458119818874.

It is a happy number.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 119704727962 + ... + 119704727965.

It is an arithmetic number, because the mean of its divisors is an integer number (179557091946).

Almost surely, 2^478818911854 is an apocalyptic number.

478818911854 is a deficient number, since it is larger than the sum of its proper divisors (239409455930).

478818911854 is a wasteful number, since it uses less digits than its factorization.

478818911854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239409455929.

The product of its digits is 20643840, while the sum is 64.

The spelling of 478818911854 in words is "four hundred seventy-eight billion, eight hundred eighteen million, nine hundred eleven thousand, eight hundred fifty-four".