27748565075 has 24 divisors (see below), whose sum is σ = 42898563840. Its totient is φ = 17297805600.

The previous prime is 27748565011. The next prime is 27748565147. The reversal of 27748565075 is 57056584772.

It is not a de Polignac number, because 27748565075 - 2⁶ = 27748565011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27748565075.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7205495 + ... + 7209344.

It is an arithmetic number, because the mean of its divisors is an integer number (1787440160).

Almost surely, 2^27748565075 is an apocalyptic number.

27748565075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27748565075 is a deficient number, since it is larger than the sum of its proper divisors (15149998765).

27748565075 is a wasteful number, since it uses less digits than its factorization.

27748565075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14414867 (or 14414862 counting only the distinct ones).

The product of its (nonzero) digits is 16464000, while the sum is 56.

The spelling of 27748565075 in words is "twenty-seven billion, seven hundred forty-eight million, five hundred sixty-five thousand, seventy-five".