128012000281 has 8 divisors (see below), whose sum is σ = 146999426400. Its totient is φ = 110249569440.

The previous prime is 128012000279. The next prime is 128012000317. The reversal of 128012000281 is 182000210821.

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

It is a cyclic number.

It is not a de Polignac number, because 128012000281 - 2¹ = 128012000279 is a prime.

It is a super-2 number, since 2×128012000281² (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 (128012000251) 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, 306248596 + ... + 306249013.

It is an arithmetic number, because the mean of its divisors is an integer number (18374928300).

Almost surely, 2^128012000281 is an apocalyptic number.

128012000281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128012000281 is the 160008-th centered decagonal number.

It is an amenable number.

128012000281 is a deficient number, since it is larger than the sum of its proper divisors (18987426119).

128012000281 is a wasteful number, since it uses less digits than its factorization.

128012000281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612497639.

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 128012000281 in words is "one hundred twenty-eight billion, twelve million, two hundred eighty-one", and thus it is an aban number.