54342128689 has 2 divisors, whose sum is σ = 54342128690. Its totient is φ = 54342128688.

The previous prime is 54342128671. The next prime is 54342128747. The reversal of 54342128689 is 98682124345.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51117592464 + 3224536225 = 226092^2 + 56785^2 .

It is a cyclic number.

It is not a de Polignac number, because 54342128689 - 2¹⁷ = 54341997617 is a prime.

It is not a weakly prime, because it can be changed into another prime (54342128089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27171064344 + 27171064345.

It is an arithmetic number, because the mean of its divisors is an integer number (27171064345).

Almost surely, 2^54342128689 is an apocalyptic number.

It is an amenable number.

54342128689 is a deficient number, since it is larger than the sum of its proper divisors (1).

54342128689 is an equidigital number, since it uses as much as digits as its factorization.

54342128689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 52.

The spelling of 54342128689 in words is "fifty-four billion, three hundred forty-two million, one hundred twenty-eight thousand, six hundred eighty-nine".