27990475008 has 36 divisors (see below), whose sum is σ = 74495485008. Its totient is φ = 9330158080.

The previous prime is 27990474989. The next prime is 27990475049. The reversal of 27990475008 is 80057409972.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18222198 + ... + 18223733.

It is an arithmetic number, because the mean of its divisors is an integer number (2069319028).

Almost surely, 2^27990475008 is an apocalyptic number.

It is an amenable number.

27990475008 is an abundant number, since it is smaller than the sum of its proper divisors (46505010000).

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

27990475008 is an equidigital number, since it uses as much as digits as its factorization.

27990475008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36445950 (or 36445936 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 27990475008 in words is "twenty-seven billion, nine hundred ninety million, four hundred seventy-five thousand, eight".