27691831713 has 96 divisors (see below), whose sum is σ = 48360023040. Its totient is φ = 13687470720.

The previous prime is 27691831691. The next prime is 27691831747. The reversal of 27691831713 is 31713819672.

It is not a de Polignac number, because 27691831713 - 2⁵ = 27691831681 is a prime.

It is a super-2 number, since 2×27691831713² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27691831613) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 83660958 + ... + 83661288.

It is an arithmetic number, because the mean of its divisors is an integer number (503750240).

Almost surely, 2^27691831713 is an apocalyptic number.

It is an amenable number.

27691831713 is a deficient number, since it is larger than the sum of its proper divisors (20668191327).

27691831713 is a wasteful number, since it uses less digits than its factorization.

27691831713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 500 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The spelling of 27691831713 in words is "twenty-seven billion, six hundred ninety-one million, eight hundred thirty-one thousand, seven hundred thirteen".