128251088997 has 8 divisors (see below), whose sum is σ = 171026997600. Its totient is φ = 85487953200.

The previous prime is 128251088983. The next prime is 128251089007. The reversal of 128251088997 is 799880152821.

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

It is not a de Polignac number, because 128251088997 - 2¹⁴ = 128251072613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128251088997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128251088197) 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 7 ways as a sum of consecutive naturals, for example, 3169747 + ... + 3209952.

It is an arithmetic number, because the mean of its divisors is an integer number (21378374700).

Almost surely, 2^128251088997 is an apocalyptic number.

It is an amenable number.

128251088997 is a deficient number, since it is larger than the sum of its proper divisors (42775908603).

128251088997 is an equidigital number, since it uses as much as digits as its factorization.

128251088997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386403.

The product of its (nonzero) digits is 5806080, while the sum is 60.

The spelling of 128251088997 in words is "one hundred twenty-eight billion, two hundred fifty-one million, eighty-eight thousand, nine hundred ninety-seven".