128506565350 has 24 divisors (see below), whose sum is σ = 239479281720. Its totient is φ = 51304331520.

The previous prime is 128506565347. The next prime is 128506565353. The reversal of 128506565350 is 53565605821.

128506565350 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (128506565347) and next prime (128506565353).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 128506565350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128506565353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2430955 + ... + 2483254.

It is an arithmetic number, because the mean of its divisors is an integer number (9978303405).

Almost surely, 2^128506565350 is an apocalyptic number.

128506565350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128506565350 is a deficient number, since it is larger than the sum of its proper divisors (110972716370).

128506565350 is a wasteful number, since it uses less digits than its factorization.

128506565350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914744 (or 4914739 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 128506565350 in words is "one hundred twenty-eight billion, five hundred six million, five hundred sixty-five thousand, three hundred fifty".