27776831613 has 8 divisors (see below), whose sum is σ = 38646026688. Its totient is φ = 17712762144.

The previous prime is 27776831569. The next prime is 27776831629. The reversal of 27776831613 is 31613867772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27776831613 - 2¹² = 27776827517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27776811613) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 201281320 + ... + 201281457.

It is an arithmetic number, because the mean of its divisors is an integer number (4830753336).

Almost surely, 2^27776831613 is an apocalyptic number.

27776831613 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

27776831613 is a deficient number, since it is larger than the sum of its proper divisors (10869195075).

27776831613 is a wasteful number, since it uses less digits than its factorization.

27776831613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402562803.

The product of its digits is 1778112, while the sum is 51.

The spelling of 27776831613 in words is "twenty-seven billion, seven hundred seventy-six million, eight hundred thirty-one thousand, six hundred thirteen".