128281286752466 has 8 divisors (see below), whose sum is σ = 193496912979120. Its totient is φ = 63782315759428.

The previous prime is 128281286752427. The next prime is 128281286752469. The reversal of 128281286752466 is 664257682182821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×128281286752466³ (a number of 43 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128281286752396 and 128281286752405.

It is not an unprimeable number, because it can be changed into a prime (128281286752469) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 179163807956 + ... + 179163808671.

It is an arithmetic number, because the mean of its divisors is an integer number (24187114122390).

Almost surely, 2^{128281286752466} is an apocalyptic number.

128281286752466 is a deficient number, since it is larger than the sum of its proper divisors (65215626226654).

128281286752466 is a wasteful number, since it uses less digits than its factorization.

128281286752466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358327616808.

The product of its digits is 247726080, while the sum is 68.

The spelling of 128281286752466 in words is "one hundred twenty-eight trillion, two hundred eighty-one billion, two hundred eighty-six million, seven hundred fifty-two thousand, four hundred sixty-six".