27891004037 has 8 divisors (see below), whose sum is σ = 30094124760. Its totient is φ = 25696120320.

The previous prime is 27891004013. The next prime is 27891004051. The reversal of 27891004037 is 73040019872.

It is a Cunningham number, because it is equal to 167006²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 27891004036 = 1^2 + 167006^2 .

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

It is not a de Polignac number, because 27891004037 - 2¹⁴ = 27890987653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27891003985 and 27891004003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27891004067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2052212 + ... + 2065757.

It is an arithmetic number, because the mean of its divisors is an integer number (3761765595).

Almost surely, 2^27891004037 is an apocalyptic number.

It is an amenable number.

27891004037 is a deficient number, since it is larger than the sum of its proper divisors (2203120723).

27891004037 is a wasteful number, since it uses less digits than its factorization.

27891004037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118503.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 27891004037 in words is "twenty-seven billion, eight hundred ninety-one million, four thousand, thirty-seven".