12728154170105 has 16 divisors (see below), whose sum is σ = 16703050089600. Its totient is φ = 9234206520960.

The previous prime is 12728154170101. The next prime is 12728154170189. The reversal of 12728154170105 is 50107145182721.

12728154170105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12728154170105 - 2² = 12728154170101 is a prime.

It is a super-2 number, since 2×12728154170105² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12728154170101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282888245 + ... + 282933234.

It is an arithmetic number, because the mean of its divisors is an integer number (1043940630600).

Almost surely, 2^{12728154170105} is an apocalyptic number.

It is an amenable number.

12728154170105 is a deficient number, since it is larger than the sum of its proper divisors (3974895919495).

12728154170105 is a wasteful number, since it uses less digits than its factorization.

12728154170105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565821904.

The product of its (nonzero) digits is 156800, while the sum is 44.

The spelling of 12728154170105 in words is "twelve trillion, seven hundred twenty-eight billion, one hundred fifty-four million, one hundred seventy thousand, one hundred five".