27648657772 has 6 divisors (see below), whose sum is σ = 48385151108. Its totient is φ = 13824328884.

The previous prime is 27648657767. The next prime is 27648657791. The reversal of 27648657772 is 27775684672.

It is a self number, because there is not a number n which added to its sum of digits gives 27648657772.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3456082218 + ... + 3456082225.

Almost surely, 2^27648657772 is an apocalyptic number.

It is an amenable number.

27648657772 is a deficient number, since it is larger than the sum of its proper divisors (20736493336).

27648657772 is a wasteful number, since it uses less digits than its factorization.

27648657772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912164447 (or 6912164445 counting only the distinct ones).

The product of its digits is 55319040, while the sum is 61.

The spelling of 27648657772 in words is "twenty-seven billion, six hundred forty-eight million, six hundred fifty-seven thousand, seven hundred seventy-two".