27864793375 has 8 divisors (see below), whose sum is σ = 34775262288. Its totient is φ = 22291834600.

The previous prime is 27864793373. The next prime is 27864793391. The reversal of 27864793375 is 57339746872.

It is a happy number.

It is not a de Polignac number, because 27864793375 - 2¹ = 27864793373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27864793373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111459049 + ... + 111459298.

It is an arithmetic number, because the mean of its divisors is an integer number (4346907786).

Almost surely, 2^27864793375 is an apocalyptic number.

27864793375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27864793375 is a deficient number, since it is larger than the sum of its proper divisors (6910468913).

27864793375 is an equidigital number, since it uses as much as digits as its factorization.

27864793375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222918362 (or 222918352 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 61.

The spelling of 27864793375 in words is "twenty-seven billion, eight hundred sixty-four million, seven hundred ninety-three thousand, three hundred seventy-five".