27278721848 has 16 divisors (see below), whose sum is σ = 58454404080. Its totient is φ = 11690880768.

The previous prime is 27278721823. The next prime is 27278721851. The reversal of 27278721848 is 84812787272.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 487120033 = 27278721848 / (2 + 7 + 2 + 7 + 8 + 7 + 2 + 1 + 8 + 4 + 8).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 27278721793 and 27278721802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243559961 + ... + 243560072.

It is an arithmetic number, because the mean of its divisors is an integer number (3653400255).

Almost surely, 2^27278721848 is an apocalyptic number.

27278721848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27278721848 is an abundant number, since it is smaller than the sum of its proper divisors (31175682232).

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

27278721848 is a wasteful number, since it uses less digits than its factorization.

27278721848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487120046 (or 487120042 counting only the distinct ones).

The product of its digits is 5619712, while the sum is 56.

The spelling of 27278721848 in words is "twenty-seven billion, two hundred seventy-eight million, seven hundred twenty-one thousand, eight hundred forty-eight".