128316218006448 has 30 divisors (see below), whose sum is σ = 359107193449004. Its totient is φ = 42772072668768.

The previous prime is 128316218006413. The next prime is 128316218006563. The reversal of 128316218006448 is 844600812613821.

128316218006448 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 1 + 621 + 8 + 0 + 0 + 6 + 4 + 4 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 128316218006394 and 128316218006403.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445542423490 + ... + 445542423777.

Almost surely, 2^{128316218006448} is an apocalyptic number.

128316218006448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128316218006448 is an abundant number, since it is smaller than the sum of its proper divisors (230790975442556).

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

128316218006448 is a wasteful number, since it uses less digits than its factorization.

128316218006448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891084847281 (or 891084847272 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

The spelling of 128316218006448 in words is "one hundred twenty-eight trillion, three hundred sixteen billion, two hundred eighteen million, six thousand, four hundred forty-eight".