27975460649 has 16 divisors (see below), whose sum is σ = 29068258560. Its totient is φ = 26904303360.

The previous prime is 27975460631. The next prime is 27975460651. The reversal of 27975460649 is 94606457972.

It is a cyclic number.

It is not a de Polignac number, because 27975460649 - 2⁸ = 27975460393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27975460679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3215297 + ... + 3223985.

It is an arithmetic number, because the mean of its divisors is an integer number (1816766160).

Almost surely, 2^27975460649 is an apocalyptic number.

It is an amenable number.

27975460649 is a deficient number, since it is larger than the sum of its proper divisors (1092797911).

27975460649 is a wasteful number, since it uses less digits than its factorization.

27975460649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9920.

The product of its (nonzero) digits is 22861440, while the sum is 59.

The spelling of 27975460649 in words is "twenty-seven billion, nine hundred seventy-five million, four hundred sixty thousand, six hundred forty-nine".