128915290259 has 6 divisors (see below), whose sum is σ = 149962684644. Its totient is φ = 110498820180.

The previous prime is 128915290247. The next prime is 128915290261. The reversal of 128915290259 is 952092519821.

It is not a de Polignac number, because 128915290259 - 2⁸ = 128915290003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128915290259.

It is not an unprimeable number, because it can be changed into a prime (128915290289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1315462097 + ... + 1315462194.

It is an arithmetic number, because the mean of its divisors is an integer number (24993780774).

Almost surely, 2^128915290259 is an apocalyptic number.

128915290259 is a deficient number, since it is larger than the sum of its proper divisors (21047394385).

128915290259 is an equidigital number, since it uses as much as digits as its factorization.

128915290259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630924305 (or 2630924298 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 53.

The spelling of 128915290259 in words is "one hundred twenty-eight billion, nine hundred fifteen million, two hundred ninety thousand, two hundred fifty-nine".