27727718450 has 48 divisors (see below), whose sum is σ = 52226865600. Its totient is φ = 10951225920.

The previous prime is 27727718449. The next prime is 27727718477. The reversal of 27727718450 is 5481772772.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1789637 + ... + 1805063.

It is an arithmetic number, because the mean of its divisors is an integer number (1088059700).

Almost surely, 2^27727718450 is an apocalyptic number.

27727718450 is a deficient number, since it is larger than the sum of its proper divisors (24499147150).

27727718450 is a wasteful number, since it uses less digits than its factorization.

27727718450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15891 (or 15886 counting only the distinct ones).

The product of its (nonzero) digits is 1536640, while the sum is 50.

The spelling of 27727718450 in words is "twenty-seven billion, seven hundred twenty-seven million, seven hundred eighteen thousand, four hundred fifty".