27824775475 has 24 divisors (see below), whose sum is σ = 39488106528. Its totient is φ = 19052544000.

The previous prime is 27824775469. The next prime is 27824775479. The reversal of 27824775475 is 57457742872.

It is a de Polignac number, because none of the positive numbers 2^k-27824775475 is a prime.

It is a super-2 number, since 2×27824775475² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27824775479) 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 23 ways as a sum of consecutive naturals, for example, 9267 + ... + 236083.

It is an arithmetic number, because the mean of its divisors is an integer number (1645337772).

Almost surely, 2^27824775475 is an apocalyptic number.

27824775475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27824775475 is a deficient number, since it is larger than the sum of its proper divisors (11663331053).

27824775475 is a wasteful number, since it uses less digits than its factorization.

27824775475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227535 (or 227530 counting only the distinct ones).

The product of its digits is 30732800, while the sum is 58.

The spelling of 27824775475 in words is "twenty-seven billion, eight hundred twenty-four million, seven hundred seventy-five thousand, four hundred seventy-five".