128650242305 has 16 divisors (see below), whose sum is σ = 167371520400. Its totient is φ = 94365643008.

The previous prime is 128650242293. The next prime is 128650242317. The reversal of 128650242305 is 503242056821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128650242293) and next prime (128650242317).

It can be written as a sum of positive squares in 8 ways, for example, as 13006718209 + 115643524096 = 114047^2 + 340064^2 .

It is not a de Polignac number, because 128650242305 - 2¹² = 128650238209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6632042 + ... + 6651411.

It is an arithmetic number, because the mean of its divisors is an integer number (10460720025).

Almost surely, 2^128650242305 is an apocalyptic number.

It is an amenable number.

128650242305 is a deficient number, since it is larger than the sum of its proper divisors (38721278095).

128650242305 is a wasteful number, since it uses less digits than its factorization.

128650242305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13283620.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 128650242305 in words is "one hundred twenty-eight billion, six hundred fifty million, two hundred forty-two thousand, three hundred five".