128789015029 has 2 divisors, whose sum is σ = 128789015030. Its totient is φ = 128789015028.

The previous prime is 128789014951. The next prime is 128789015053. The reversal of 128789015029 is 920510987821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107705394225 + 21083620804 = 328185^2 + 145202^2 .

It is a cyclic number.

It is not a de Polignac number, because 128789015029 - 2¹⁷ = 128788883957 is a prime.

It is a super-2 number, since 2×128789015029² (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 (128789015099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64394507514 + 64394507515.

It is an arithmetic number, because the mean of its divisors is an integer number (64394507515).

Almost surely, 2^128789015029 is an apocalyptic number.

It is an amenable number.

128789015029 is a deficient number, since it is larger than the sum of its proper divisors (1).

128789015029 is an equidigital number, since it uses as much as digits as its factorization.

128789015029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 128789015029 in words is "one hundred twenty-eight billion, seven hundred eighty-nine million, fifteen thousand, twenty-nine".