128144669601 has 32 divisors (see below), whose sum is σ = 185007247488. Its totient is φ = 78428436480.

The previous prime is 128144669581. The next prime is 128144669623. The reversal of 128144669601 is 106966441821.

It is not a de Polignac number, because 128144669601 - 2¹⁹ = 128144145313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128144669641) 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 31 ways as a sum of consecutive naturals, for example, 9031825 + ... + 9046001.

It is an arithmetic number, because the mean of its divisors is an integer number (5781476484).

Almost surely, 2^128144669601 is an apocalyptic number.

It is an amenable number.

128144669601 is a deficient number, since it is larger than the sum of its proper divisors (56862577887).

128144669601 is a wasteful number, since it uses less digits than its factorization.

128144669601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15441.

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 128144669601 in words is "one hundred twenty-eight billion, one hundred forty-four million, six hundred sixty-nine thousand, six hundred one".