27451085568 has 72 divisors (see below), whose sum is σ = 74089080576. Its totient is φ = 9021465600.

The previous prime is 27451085567. The next prime is 27451085569. The reversal of 27451085568 is 86558015472.

It is an interprime number because it is at equal distance from previous prime (27451085567) and next prime (27451085569).

It is a self number, because there is not a number n which added to its sum of digits gives 27451085568.

It is not an unprimeable number, because it can be changed into a prime (27451085567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197188 + ... + 306243.

It is an arithmetic number, because the mean of its divisors is an integer number (1029015008).

Almost surely, 2^27451085568 is an apocalyptic number.

It is an amenable number.

27451085568 is an abundant number, since it is smaller than the sum of its proper divisors (46637995008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27451085568 is an equidigital number, since it uses as much as digits as its factorization.

27451085568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503521 (or 503507 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 51.

The spelling of 27451085568 in words is "twenty-seven billion, four hundred fifty-one million, eighty-five thousand, five hundred sixty-eight".