27866473880 has 64 divisors (see below), whose sum is σ = 75428064000. Its totient is φ = 9051364224.

The previous prime is 27866473801. The next prime is 27866473913. The reversal of 27866473880 is 8837466872.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2613710 + ... + 2624349.

It is an arithmetic number, because the mean of its divisors is an integer number (1178563500).

Almost surely, 2^27866473880 is an apocalyptic number.

27866473880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27866473880 is an abundant number, since it is smaller than the sum of its proper divisors (47561590120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27866473880 is a wasteful number, since it uses less digits than its factorization.

27866473880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238096 (or 5238092 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 59.

The spelling of 27866473880 in words is "twenty-seven billion, eight hundred sixty-six million, four hundred seventy-three thousand, eight hundred eighty".