2755766021165 has 32 divisors (see below), whose sum is σ = 3415084799616. Its totient is φ = 2133711740160.

The previous prime is 2755766021161. The next prime is 2755766021207. The reversal of 2755766021165 is 5611206675572.

It is a happy number.

It is not a de Polignac number, because 2755766021165 - 2² = 2755766021161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2755766021161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14443922 + ... + 14633468.

It is an arithmetic number, because the mean of its divisors is an integer number (106721399988).

Almost surely, 2^{2755766021165} is an apocalyptic number.

It is an amenable number.

2755766021165 is a deficient number, since it is larger than the sum of its proper divisors (659318778451).

2755766021165 is a wasteful number, since it uses less digits than its factorization.

2755766021165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190349.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 2755766021165 in words is "two trillion, seven hundred fifty-five billion, seven hundred sixty-six million, twenty-one thousand, one hundred sixty-five".