27725918440 has 32 divisors (see below), whose sum is σ = 68054528160. Its totient is φ = 10082152000.

The previous prime is 27725918419. The next prime is 27725918503. The reversal of 27725918440 is 4481952772.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31506286 + ... + 31507165.

It is an arithmetic number, because the mean of its divisors is an integer number (2126704005).

Almost surely, 2^27725918440 is an apocalyptic number.

27725918440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27725918440 is an abundant number, since it is smaller than the sum of its proper divisors (40328609720).

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

27725918440 is a wasteful number, since it uses less digits than its factorization.

27725918440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63013473 (or 63013469 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 27725918440 in words is "twenty-seven billion, seven hundred twenty-five million, nine hundred eighteen thousand, four hundred forty".