27785328575 has 12 divisors (see below), whose sum is σ = 34456585560. Its totient is φ = 22226470560.

The previous prime is 27785328553. The next prime is 27785328577. The reversal of 27785328575 is 57582358772.

It is a happy number.

It is not a de Polignac number, because 27785328575 - 2⁶ = 27785328511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27785328577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334352 + ... + 409098.

It is an arithmetic number, because the mean of its divisors is an integer number (2871382130).

Almost surely, 2^27785328575 is an apocalyptic number.

27785328575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27785328575 is a deficient number, since it is larger than the sum of its proper divisors (6671256985).

27785328575 is a wasteful number, since it uses less digits than its factorization.

27785328575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89626 (or 89621 counting only the distinct ones).

The product of its digits is 32928000, while the sum is 59.

The spelling of 27785328575 in words is "twenty-seven billion, seven hundred eighty-five million, three hundred twenty-eight thousand, five hundred seventy-five".