27768440038 has 4 divisors (see below), whose sum is σ = 41652660060. Its totient is φ = 13884220018.

The previous prime is 27768439987. The next prime is 27768440053. The reversal of 27768440038 is 83004486772.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 27768439973 and 27768440000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942110008 + ... + 6942110011.

It is an arithmetic number, because the mean of its divisors is an integer number (10413165015).

Almost surely, 2^27768440038 is an apocalyptic number.

27768440038 is a deficient number, since it is larger than the sum of its proper divisors (13884220022).

27768440038 is a wasteful number, since it uses less digits than its factorization.

27768440038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884220021.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 27768440038 in words is "twenty-seven billion, seven hundred sixty-eight million, four hundred forty thousand, thirty-eight".