2155727675117 has 16 divisors (see below), whose sum is σ = 2365266173760. Its totient is φ = 1955619902208.

The previous prime is 2155727675107. The next prime is 2155727675159. The reversal of 2155727675117 is 7115767275512.

It is a cyclic number.

It is not a de Polignac number, because 2155727675117 - 2¹⁸ = 2155727412973 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 (2155727675107) 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, 3435203 + ... + 4013984.

It is an arithmetic number, because the mean of its divisors is an integer number (147829135860).

Almost surely, 2^{2155727675117} is an apocalyptic number.

It is an amenable number.

2155727675117 is a deficient number, since it is larger than the sum of its proper divisors (209538498643).

2155727675117 is a wasteful number, since it uses less digits than its factorization.

2155727675117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449820.

The product of its digits is 7203000, while the sum is 56.

The spelling of 2155727675117 in words is "two trillion, one hundred fifty-five billion, seven hundred twenty-seven million, six hundred seventy-five thousand, one hundred seventeen".