27228735709 has 16 divisors (see below), whose sum is σ = 32200456320. Its totient is φ = 22527933120.

The previous prime is 27228735697. The next prime is 27228735727. The reversal of 27228735709 is 90753782272.

It is a happy number.

It is not a de Polignac number, because 27228735709 - 2⁹ = 27228735197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27228735799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814494 + ... + 847264.

It is an arithmetic number, because the mean of its divisors is an integer number (2012528520).

Almost surely, 2^27228735709 is an apocalyptic number.

27228735709 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

27228735709 is a deficient number, since it is larger than the sum of its proper divisors (4971720611).

27228735709 is a wasteful number, since it uses less digits than its factorization.

27228735709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36900.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 27228735709 in words is "twenty-seven billion, two hundred twenty-eight million, seven hundred thirty-five thousand, seven hundred nine".