2731575666245 has 4 divisors (see below), whose sum is σ = 3277890799500. Its totient is φ = 2185260532992.

The previous prime is 2731575666229. The next prime is 2731575666247. The reversal of 2731575666245 is 5426665751372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1362678006244 + 1368897660001 = 1167338^2 + 1169999^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731575666245 - 2⁴ = 2731575666229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731575666247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273157566620 + ... + 273157566629.

It is an arithmetic number, because the mean of its divisors is an integer number (819472699875).

Almost surely, 2^{2731575666245} is an apocalyptic number.

It is an amenable number.

2731575666245 is a deficient number, since it is larger than the sum of its proper divisors (546315133255).

2731575666245 is an equidigital number, since it uses as much as digits as its factorization.

2731575666245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546315133254.

The product of its digits is 63504000, while the sum is 59.

The spelling of 2731575666245 in words is "two trillion, seven hundred thirty-one billion, five hundred seventy-five million, six hundred sixty-six thousand, two hundred forty-five".