128002655385001 has 4 divisors (see below), whose sum is σ = 128005852374400. Its totient is φ = 127999458395604.

The previous prime is 128002655384999. The next prime is 128002655385023. The reversal of 128002655385001 is 100583556200821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128002655385001 - 2¹ = 128002655384999 is a prime.

It is a super-3 number, since 3×128002655385001³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128002655385091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598434641 + ... + 1598514718.

It is an arithmetic number, because the mean of its divisors is an integer number (32001463093600).

Almost surely, 2^{128002655385001} is an apocalyptic number.

It is an amenable number.

128002655385001 is a deficient number, since it is larger than the sum of its proper divisors (3196989399).

128002655385001 is an equidigital number, since it uses as much as digits as its factorization.

128002655385001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196989398.

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 128002655385001 in words is "one hundred twenty-eight trillion, two billion, six hundred fifty-five million, three hundred eighty-five thousand, one".