2745005743665 has 16 divisors (see below), whose sum is σ = 4880010211200. Its totient is φ = 1464003063216.

The previous prime is 2745005743663. The next prime is 2745005743679. The reversal of 2745005743665 is 5663475005472.

2745005743665 is a `hidden beast` number, since 2 + 7 + 4 + 5 + 0 + 0 + 574 + 3 + 6 + 65 = 666.

It is not a de Polignac number, because 2745005743665 - 2¹ = 2745005743663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2745005743663) 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, 10166687805 + ... + 10166688074.

It is an arithmetic number, because the mean of its divisors is an integer number (305000638200).

Almost surely, 2^{2745005743665} is an apocalyptic number.

It is an amenable number.

2745005743665 is a deficient number, since it is larger than the sum of its proper divisors (2135004467535).

2745005743665 is a wasteful number, since it uses less digits than its factorization.

2745005743665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20333375893 (or 20333375887 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 54.

The spelling of 2745005743665 in words is "two trillion, seven hundred forty-five billion, five million, seven hundred forty-three thousand, six hundred sixty-five".