128281056015166 has 16 divisors (see below), whose sum is σ = 202550218952400. Its totient is φ = 60764355802368.

The previous prime is 128281056015107. The next prime is 128281056015179. The reversal of 128281056015166 is 661510650182821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3210195 + ... + 16336078.

It is an arithmetic number, because the mean of its divisors is an integer number (12659388684525).

Almost surely, 2^{128281056015166} is an apocalyptic number.

128281056015166 is a deficient number, since it is larger than the sum of its proper divisors (74269162937234).

128281056015166 is a wasteful number, since it uses less digits than its factorization.

128281056015166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19719003.

The product of its (nonzero) digits is 1382400, while the sum is 52.

The spelling of 128281056015166 in words is "one hundred twenty-eight trillion, two hundred eighty-one billion, fifty-six million, fifteen thousand, one hundred sixty-six".