7109128026 has 128 divisors (see below), whose sum is σ = 21211545600. Its totient is φ = 1704473280.

The previous prime is 7109128009. The next prime is 7109128031. The reversal of 7109128026 is 6208219017.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11706 + ... + 119813.

It is an arithmetic number, because the mean of its divisors is an integer number (165715200).

Almost surely, 2^7109128026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7109128026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10605772800).

7109128026 is an abundant number, since it is smaller than the sum of its proper divisors (14102417574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7109128026 is a wasteful number, since it uses less digits than its factorization.

7109128026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131561 (or 131555 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 7109128026 is about 84315.6452030108. The cubic root of 7109128026 is about 1922.8206539792.

Subtracting from 7109128026 its reverse (6208219017), we obtain a palindrome (900909009).

The spelling of 7109128026 in words is "seven billion, one hundred nine million, one hundred twenty-eight thousand, twenty-six".