128332371508621 has 8 divisors (see below), whose sum is σ = 154384807830080. Its totient is φ = 104209745285088.

The previous prime is 128332371508591. The next prime is 128332371508633. The reversal of 128332371508621 is 126805173233821.

It is a happy number.

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 128332371508621 - 2⁷ = 128332371508493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128332371508651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482452524336 + ... + 482452524601.

It is an arithmetic number, because the mean of its divisors is an integer number (19298100978760).

Almost surely, 2^{128332371508621} is an apocalyptic number.

It is an amenable number.

128332371508621 is a deficient number, since it is larger than the sum of its proper divisors (26052436321459).

128332371508621 is an equidigital number, since it uses as much as digits as its factorization.

128332371508621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964905048963.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 128332371508621 in words is "one hundred twenty-eight trillion, three hundred thirty-two billion, three hundred seventy-one million, five hundred eight thousand, six hundred twenty-one".