128265763 has 2 divisors, whose sum is σ = 128265764. Its totient is φ = 128265762.

The previous prime is 128265757. The next prime is 128265829. The reversal of 128265763 is 367562821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128265763 - 2¹⁷ = 128134691 is a prime.

It is not a weakly prime, because it can be changed into another prime (128265563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64132881 + 64132882.

It is an arithmetic number, because the mean of its divisors is an integer number (64132882).

Almost surely, 2^128265763 is an apocalyptic number.

128265763 is a deficient number, since it is larger than the sum of its proper divisors (1).

128265763 is an equidigital number, since it uses as much as digits as its factorization.

128265763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 128265763 is about 11325.4475849743. The cubic root of 128265763 is about 504.3169709213.

The spelling of 128265763 in words is "one hundred twenty-eight million, two hundred sixty-five thousand, seven hundred sixty-three".