128426148218 has 8 divisors (see below), whose sum is σ = 194343994548. Its totient is φ = 63644816704.

The previous prime is 128426148197. The next prime is 128426148247. The reversal of 128426148218 is 812841624821.

It can be written as a sum of positive squares in 2 ways, for example, as 127304099209 + 1122049009 = 356797^2 + 33497^2 .

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

It is a super-2 number, since 2×128426148218² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284128421 + ... + 284128872.

Almost surely, 2^128426148218 is an apocalyptic number.

128426148218 is a deficient number, since it is larger than the sum of its proper divisors (65917846330).

128426148218 is a wasteful number, since it uses less digits than its factorization.

128426148218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568257408.

The product of its digits is 393216, while the sum is 47.

The spelling of 128426148218 in words is "one hundred twenty-eight billion, four hundred twenty-six million, one hundred forty-eight thousand, two hundred eighteen".