128178484601 has 2 divisors, whose sum is σ = 128178484602. Its totient is φ = 128178484600.

The previous prime is 128178484591. The next prime is 128178484619. The reversal of 128178484601 is 106484871821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97811937001 + 30366547600 = 312749^2 + 174260^2 .

It is a cyclic number.

It is not a de Polignac number, because 128178484601 - 2⁶ = 128178484537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128178484601.

It is not a weakly prime, because it can be changed into another prime (128178484631) 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 as a sum of consecutive naturals, namely, 64089242300 + 64089242301.

It is an arithmetic number, because the mean of its divisors is an integer number (64089242301).

Almost surely, 2^128178484601 is an apocalyptic number.

It is an amenable number.

128178484601 is a deficient number, since it is larger than the sum of its proper divisors (1).

128178484601 is an equidigital number, since it uses as much as digits as its factorization.

128178484601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 688128, while the sum is 50.

The spelling of 128178484601 in words is "one hundred twenty-eight billion, one hundred seventy-eight million, four hundred eighty-four thousand, six hundred one".