128024454637 has 2 divisors, whose sum is σ = 128024454638. Its totient is φ = 128024454636.

The previous prime is 128024454631. The next prime is 128024454703. The reversal of 128024454637 is 736454420821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124262595081 + 3761859556 = 352509^2 + 61334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128024454637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128024454631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64012227318 + 64012227319.

It is an arithmetic number, because the mean of its divisors is an integer number (64012227319).

Almost surely, 2^128024454637 is an apocalyptic number.

It is an amenable number.

128024454637 is a deficient number, since it is larger than the sum of its proper divisors (1).

128024454637 is an equidigital number, since it uses as much as digits as its factorization.

128024454637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 46.

The spelling of 128024454637 in words is "one hundred twenty-eight billion, twenty-four million, four hundred fifty-four thousand, six hundred thirty-seven".