27733172845 has 16 divisors (see below), whose sum is σ = 39345586560. Its totient is φ = 18361272384.

The previous prime is 27733172839. The next prime is 27733172861. The reversal of 27733172845 is 54827133772.

It is not a de Polignac number, because 27733172845 - 2⁵ = 27733172813 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 13660647 + ... + 13662676.

It is an arithmetic number, because the mean of its divisors is an integer number (2459099160).

Almost surely, 2^27733172845 is an apocalyptic number.

It is an amenable number.

27733172845 is a deficient number, since it is larger than the sum of its proper divisors (11612413715).

27733172845 is a wasteful number, since it uses less digits than its factorization.

27733172845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27323364.

The product of its digits is 1975680, while the sum is 49.

The spelling of 27733172845 in words is "twenty-seven billion, seven hundred thirty-three million, one hundred seventy-two thousand, eight hundred forty-five".