128462911 has 2 divisors, whose sum is σ = 128462912. Its totient is φ = 128462910.

The previous prime is 128462909. The next prime is 128462951. The reversal of 128462911 is 119264821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128462911 - 2¹ = 128462909 is a prime.

Together with 128462909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128462951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64231455 + 64231456.

It is an arithmetic number, because the mean of its divisors is an integer number (64231456).

Almost surely, 2^128462911 is an apocalyptic number.

128462911 is a deficient number, since it is larger than the sum of its proper divisors (1).

128462911 is an equidigital number, since it uses as much as digits as its factorization.

128462911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 128462911 is about 11334.1480050333. The cubic root of 128462911 is about 504.5752216647.

The spelling of 128462911 in words is "one hundred twenty-eight million, four hundred sixty-two thousand, nine hundred eleven".