27786131823 has 16 divisors (see below), whose sum is σ = 38345854976. Its totient is φ = 17878453920.

The previous prime is 27786131783. The next prime is 27786131827. The reversal of 27786131823 is 32813168772.

It is not a de Polignac number, because 27786131823 - 2¹⁷ = 27786000751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27786131827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365815 + ... + 435192.

It is an arithmetic number, because the mean of its divisors is an integer number (2396615936).

Almost surely, 2^27786131823 is an apocalyptic number.

27786131823 is a deficient number, since it is larger than the sum of its proper divisors (10559723153).

27786131823 is a wasteful number, since it uses less digits than its factorization.

27786131823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801414.

The product of its digits is 677376, while the sum is 48.

The spelling of 27786131823 in words is "twenty-seven billion, seven hundred eighty-six million, one hundred thirty-one thousand, eight hundred twenty-three".