128106371916 has 72 divisors (see below), whose sum is σ = 327240897984. Its totient is φ = 42253492320.

The previous prime is 128106371903. The next prime is 128106371923. The reversal of 128106371916 is 619173601821.

128106371916 is a `hidden beast` number, since 1 + 2 + 8 + 1 + 0 + 637 + 1 + 9 + 1 + 6 = 666.

It is a super-2 number, since 2×128106371916² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1597311 + ... + 1675593.

It is an arithmetic number, because the mean of its divisors is an integer number (4545012472).

Almost surely, 2^128106371916 is an apocalyptic number.

It is an amenable number.

128106371916 is an abundant number, since it is smaller than the sum of its proper divisors (199134526068).

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

128106371916 is a wasteful number, since it uses less digits than its factorization.

128106371916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78771 (or 78766 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 128106371916 in words is "one hundred twenty-eight billion, one hundred six million, three hundred seventy-one thousand, nine hundred sixteen".