27994666688 has 14 divisors (see below), whose sum is σ = 55551916836. Its totient is φ = 13997333312.

The previous prime is 27994666619. The next prime is 27994666691. The reversal of 27994666688 is 88666649972.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218708270 + ... + 218708397.

Almost surely, 2^27994666688 is an apocalyptic number.

It is an amenable number.

27994666688 is a deficient number, since it is larger than the sum of its proper divisors (27557250148).

27994666688 is an equidigital number, since it uses as much as digits as its factorization.

27994666688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437416679 (or 437416669 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 71.

The spelling of 27994666688 in words is "twenty-seven billion, nine hundred ninety-four million, six hundred sixty-six thousand, six hundred eighty-eight".