4478918664387 has 4 divisors (see below), whose sum is σ = 5971891552520. Its totient is φ = 2985945776256.

The previous prime is 4478918664371. The next prime is 4478918664391. The reversal of 4478918664387 is 7834668198744.

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

It is not a de Polignac number, because 4478918664387 - 2⁴ = 4478918664371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4478918664317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746486444062 + ... + 746486444067.

It is an arithmetic number, because the mean of its divisors is an integer number (1492972888130).

Almost surely, 2^{4478918664387} is an apocalyptic number.

4478918664387 is a deficient number, since it is larger than the sum of its proper divisors (1492972888133).

4478918664387 is a wasteful number, since it uses less digits than its factorization.

4478918664387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492972888132.

The product of its digits is 1560674304, while the sum is 75.

The spelling of 4478918664387 in words is "four trillion, four hundred seventy-eight billion, nine hundred eighteen million, six hundred sixty-four thousand, three hundred eighty-seven".