128131726023 has 12 divisors (see below), whose sum is σ = 211519039888. Its totient is φ = 73218129120.

The previous prime is 128131725989. The next prime is 128131726117. The reversal of 128131726023 is 320627131821.

128131726023 is a `hidden beast` number, since 1 + 2 + 81 + 317 + 260 + 2 + 3 = 666.

It is not a de Polignac number, because 128131726023 - 2⁸ = 128131725767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128131726423) 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, 1016918398 + ... + 1016918523.

Almost surely, 2^128131726023 is an apocalyptic number.

128131726023 is a deficient number, since it is larger than the sum of its proper divisors (83387313865).

128131726023 is a wasteful number, since it uses less digits than its factorization.

128131726023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033836934 (or 2033836931 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

Adding to 128131726023 its reverse (320627131821), we get a palindrome (448758857844).

The spelling of 128131726023 in words is "one hundred twenty-eight billion, one hundred thirty-one million, seven hundred twenty-six thousand, twenty-three".