4478918664388 has 24 divisors (see below), whose sum is σ = 8977268672064. Its totient is φ = 1915372711200.

The previous prime is 4478918664371. The next prime is 4478918664391. The reversal of 4478918664388 is 8834668198744.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173480998 + ... + 173506813.

It is an arithmetic number, because the mean of its divisors is an integer number (374052861336).

Almost surely, 2^{4478918664388} is an apocalyptic number.

It is an amenable number.

4478918664388 is an abundant number, since it is smaller than the sum of its proper divisors (4498350007676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4478918664388 is a wasteful number, since it uses less digits than its factorization.

4478918664388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346988283 (or 346988281 counting only the distinct ones).

The product of its digits is 1783627776, while the sum is 76.

The spelling of 4478918664388 in words is "four trillion, four hundred seventy-eight billion, nine hundred eighteen million, six hundred sixty-four thousand, three hundred eighty-eight".