128201196685837 has 48 divisors (see below), whose sum is σ = 145340403425280. Its totient is φ = 112943291076000.

The previous prime is 128201196685819. The next prime is 128201196685927. The reversal of 128201196685837 is 738586691102821.

It is not a de Polignac number, because 128201196685837 - 2²³ = 128201188297229 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 (128201196685817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7898531512 + ... + 7898547742.

It is an arithmetic number, because the mean of its divisors is an integer number (3027925071360).

Almost surely, 2^{128201196685837} is an apocalyptic number.

It is an amenable number.

128201196685837 is a deficient number, since it is larger than the sum of its proper divisors (17139206739443).

128201196685837 is a wasteful number, since it uses less digits than its factorization.

128201196685837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31966 (or 31955 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 67.

The spelling of 128201196685837 in words is "one hundred twenty-eight trillion, two hundred one billion, one hundred ninety-six million, six hundred eighty-five thousand, eight hundred thirty-seven".