128009004479 has 2 divisors, whose sum is σ = 128009004480. Its totient is φ = 128009004478.

The previous prime is 128009004457. The next prime is 128009004491. The reversal of 128009004479 is 974400900821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128009004479 is a prime.

It is a super-2 number, since 2×128009004479² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128009004449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64004502239 + 64004502240.

It is an arithmetic number, because the mean of its divisors is an integer number (64004502240).

Almost surely, 2^128009004479 is an apocalyptic number.

128009004479 is a deficient number, since it is larger than the sum of its proper divisors (1).

128009004479 is an equidigital number, since it uses as much as digits as its factorization.

128009004479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 128009004479 in words is "one hundred twenty-eight billion, nine million, four thousand, four hundred seventy-nine".