27993946508 has 12 divisors (see below), whose sum is σ = 53442988872. Its totient is φ = 12724521120.

The previous prime is 27993946481. The next prime is 27993946543. The reversal of 27993946508 is 80564939972.

It is a happy number.

It is a super-2 number, since 2×27993946508² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318112985 + ... + 318113072.

It is an arithmetic number, because the mean of its divisors is an integer number (4453582406).

Almost surely, 2^27993946508 is an apocalyptic number.

It is an amenable number.

27993946508 is a deficient number, since it is larger than the sum of its proper divisors (25449042364).

27993946508 is a wasteful number, since it uses less digits than its factorization.

27993946508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636226072 (or 636226070 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 27993946508 in words is "twenty-seven billion, nine hundred ninety-three million, nine hundred forty-six thousand, five hundred eight".