128568523 has 2 divisors, whose sum is σ = 128568524. Its totient is φ = 128568522.

The previous prime is 128568499. The next prime is 128568529. The reversal of 128568523 is 325865821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128568523 - 2⁵ = 128568491 is a prime.

It is not a weakly prime, because it can be changed into another prime (128568529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64284261 + 64284262.

It is an arithmetic number, because the mean of its divisors is an integer number (64284262).

Almost surely, 2^128568523 is an apocalyptic number.

128568523 is a deficient number, since it is larger than the sum of its proper divisors (1).

128568523 is an equidigital number, since it uses as much as digits as its factorization.

128568523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 40.

The square root of 128568523 is about 11338.8060658960. The cubic root of 128568523 is about 504.7134576769.

The spelling of 128568523 in words is "one hundred twenty-eight million, five hundred sixty-eight thousand, five hundred twenty-three".