27866473881 has 8 divisors (see below), whose sum is σ = 37157355840. Its totient is φ = 18576620592.

The previous prime is 27866473801. The next prime is 27866473913. The reversal of 27866473881 is 18837466872.

It is a happy number.

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

It is not a de Polignac number, because 27866473881 - 2⁷ = 27866473753 is a prime.

It is a super-2 number, since 2×27866473881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27866473801) 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, 191566 + ... + 304023.

It is an arithmetic number, because the mean of its divisors is an integer number (4644669480).

Almost surely, 2^27866473881 is an apocalyptic number.

It is an amenable number.

27866473881 is a deficient number, since it is larger than the sum of its proper divisors (9290881959).

27866473881 is a wasteful number, since it uses less digits than its factorization.

27866473881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514335.

The product of its digits is 21676032, while the sum is 60.

The spelling of 27866473881 in words is "twenty-seven billion, eight hundred sixty-six million, four hundred seventy-three thousand, eight hundred eighty-one".