128180073126 has 64 divisors (see below), whose sum is σ = 294970913280. Its totient is φ = 36374883840.

The previous prime is 128180073113. The next prime is 128180073143. The reversal of 128180073126 is 621370081821.

It is a super-2 number, since 2×128180073126² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6583566 + ... + 6603006.

It is an arithmetic number, because the mean of its divisors is an integer number (4608920520).

Almost surely, 2^128180073126 is an apocalyptic number.

128180073126 is an abundant number, since it is smaller than the sum of its proper divisors (166790840154).

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

128180073126 is a wasteful number, since it uses less digits than its factorization.

128180073126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20509.

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 128180073126 in words is "one hundred twenty-eight billion, one hundred eighty million, seventy-three thousand, one hundred twenty-six".