128758810126 has 16 divisors (see below), whose sum is σ = 199631620080. Its totient is φ = 62250713280.

The previous prime is 128758810091. The next prime is 128758810129. The reversal of 128758810126 is 621018857821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 128758810126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128758810129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8936871 + ... + 8951266.

It is an arithmetic number, because the mean of its divisors is an integer number (12476976255).

Almost surely, 2^128758810126 is an apocalyptic number.

128758810126 is a deficient number, since it is larger than the sum of its proper divisors (70872809954).

128758810126 is a wasteful number, since it uses less digits than its factorization.

128758810126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17888259.

The product of its (nonzero) digits is 430080, while the sum is 49.

The spelling of 128758810126 in words is "one hundred twenty-eight billion, seven hundred fifty-eight million, eight hundred ten thousand, one hundred twenty-six".