128862308281 has 8 divisors (see below), whose sum is σ = 150696121664. Its totient is φ = 107884722960.

The previous prime is 128862308251. The next prime is 128862308297. The reversal of 128862308281 is 182803268821.

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

It is not a de Polignac number, because 128862308281 - 2⁵ = 128862308249 is a prime.

It is a super-2 number, since 2×128862308281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128862308251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214056690 + ... + 214057291.

It is an arithmetic number, because the mean of its divisors is an integer number (18837015208).

Almost surely, 2^128862308281 is an apocalyptic number.

It is an amenable number.

128862308281 is a deficient number, since it is larger than the sum of its proper divisors (21833813383).

128862308281 is an equidigital number, since it uses as much as digits as its factorization.

128862308281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428114031.

The product of its (nonzero) digits is 589824, while the sum is 49.

The spelling of 128862308281 in words is "one hundred twenty-eight billion, eight hundred sixty-two million, three hundred eight thousand, two hundred eighty-one".