128924544677 has 2 divisors, whose sum is σ = 128924544678. Its totient is φ = 128924544676.

The previous prime is 128924544659. The next prime is 128924544713. The reversal of 128924544677 is 776445429821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103149526561 + 25775018116 = 321169^2 + 160546^2 .

It is a cyclic number.

It is not a de Polignac number, because 128924544677 - 2²⁰ = 128923496101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128924544877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64462272338 + 64462272339.

It is an arithmetic number, because the mean of its divisors is an integer number (64462272339).

Almost surely, 2^128924544677 is an apocalyptic number.

It is an amenable number.

128924544677 is a deficient number, since it is larger than the sum of its proper divisors (1).

128924544677 is an equidigital number, since it uses as much as digits as its factorization.

128924544677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 59.

The spelling of 128924544677 in words is "one hundred twenty-eight billion, nine hundred twenty-four million, five hundred forty-four thousand, six hundred seventy-seven".