27740646747 has 16 divisors (see below), whose sum is σ = 44833368960. Its totient is φ = 16812513000.

The previous prime is 27740646709. The next prime is 27740646749. The reversal of 27740646747 is 74764604772.

It is a happy number.

It is not a de Polignac number, because 27740646747 - 2¹¹ = 27740644699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27740646693 and 27740646702.

It is not an unprimeable number, because it can be changed into a prime (27740646749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46701129 + ... + 46701722.

It is an arithmetic number, because the mean of its divisors is an integer number (2802085560).

Almost surely, 2^27740646747 is an apocalyptic number.

27740646747 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

27740646747 is a deficient number, since it is larger than the sum of its proper divisors (17092722213).

27740646747 is a wasteful number, since it uses less digits than its factorization.

27740646747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93402871 (or 93402865 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 54.

The spelling of 27740646747 in words is "twenty-seven billion, seven hundred forty million, six hundred forty-six thousand, seven hundred forty-seven".