2731703766545 has 32 divisors (see below), whose sum is σ = 3729633707520. Its totient is φ = 1906257104640.

The previous prime is 2731703766529. The next prime is 2731703766557. The reversal of 2731703766545 is 5456673071372.

It is not a de Polignac number, because 2731703766545 - 2⁴ = 2731703766529 is a prime.

It is a super-2 number, since 2×2731703766545² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15328211 + ... + 15505400.

It is an arithmetic number, because the mean of its divisors is an integer number (116551053360).

Almost surely, 2^{2731703766545} is an apocalyptic number.

It is an amenable number.

2731703766545 is a deficient number, since it is larger than the sum of its proper divisors (997929940975).

2731703766545 is a wasteful number, since it uses less digits than its factorization.

2731703766545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30833705.

The product of its (nonzero) digits is 22226400, while the sum is 56.

The spelling of 2731703766545 in words is "two trillion, seven hundred thirty-one billion, seven hundred three million, seven hundred sixty-six thousand, five hundred forty-five".