128440412298 has 24 divisors (see below), whose sum is σ = 303586429536. Its totient is φ = 38921337000.

The previous prime is 128440412297. The next prime is 128440412299. The reversal of 128440412298 is 892214044821.

128440412298 is a `hidden beast` number, since 1 + 284 + 40 + 41 + 2 + 298 = 666.

It is an interprime number because it is at equal distance from previous prime (128440412297) and next prime (128440412299).

It is a super-2 number, since 2×128440412298² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128440412297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324344278 + ... + 324344673.

It is an arithmetic number, because the mean of its divisors is an integer number (12649434564).

Almost surely, 2^128440412298 is an apocalyptic number.

128440412298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

128440412298 is an abundant number, since it is smaller than the sum of its proper divisors (175146017238).

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

128440412298 is a wasteful number, since it uses less digits than its factorization.

128440412298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648688970 (or 648688967 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 128440412298 in words is "one hundred twenty-eight billion, four hundred forty million, four hundred twelve thousand, two hundred ninety-eight".