2731575666138 has 16 divisors (see below), whose sum is σ = 5959801453536. Its totient is φ = 827750201840.

The previous prime is 2731575666119. The next prime is 2731575666143. The reversal of 2731575666138 is 8316665751372.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20693754981 + ... + 20693755112.

It is an arithmetic number, because the mean of its divisors is an integer number (372487590846).

Almost surely, 2^{2731575666138} is an apocalyptic number.

2731575666138 is an abundant number, since it is smaller than the sum of its proper divisors (3228225787398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2731575666138 is a wasteful number, since it uses less digits than its factorization.

2731575666138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41387510109.

The product of its digits is 38102400, while the sum is 60.

The spelling of 2731575666138 in words is "two trillion, seven hundred thirty-one billion, five hundred seventy-five million, six hundred sixty-six thousand, one hundred thirty-eight".