27109789221 has 16 divisors (see below), whose sum is σ = 37031904000. Its totient is φ = 17634202560.

The previous prime is 27109789183. The next prime is 27109789237. The reversal of 27109789221 is 12298790172.

It is a happy number.

It is not a de Polignac number, because 27109789221 - 2¹³ = 27109781029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27109789271) 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, 442221 + ... + 499778.

It is an arithmetic number, because the mean of its divisors is an integer number (2314494000).

Almost surely, 2^27109789221 is an apocalyptic number.

It is an amenable number.

27109789221 is a deficient number, since it is larger than the sum of its proper divisors (9922114779).

27109789221 is a wasteful number, since it uses less digits than its factorization.

27109789221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942236.

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 27109789221 in words is "twenty-seven billion, one hundred nine million, seven hundred eighty-nine thousand, two hundred twenty-one".