27800766172 has 24 divisors (see below), whose sum is σ = 50780822400. Its totient is φ = 13292298096.

The previous prime is 27800766089. The next prime is 27800766223. The reversal of 27800766172 is 27166700872.

It is a Harshad number since it is a multiple of its sum of digits (46).

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 7 ways as a sum of consecutive naturals, for example, 303579 + ... + 384397.

It is an arithmetic number, because the mean of its divisors is an integer number (2115867600).

Almost surely, 2^27800766172 is an apocalyptic number.

It is an amenable number.

27800766172 is a deficient number, since it is larger than the sum of its proper divisors (22980056228).

27800766172 is a wasteful number, since it uses less digits than its factorization.

27800766172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84585 (or 84583 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 27800766172 in words is "twenty-seven billion, eight hundred million, seven hundred sixty-six thousand, one hundred seventy-two".