27220653128 has 16 divisors (see below), whose sum is σ = 51166009260. Its totient is φ = 13576384000.

The previous prime is 27220653071. The next prime is 27220653179. The reversal of 27220653128 is 82135602272.

It can be written as a sum of positive squares in 2 ways, for example, as 26725056484 + 495596644 = 163478^2 + 22262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27220653091 and 27220653100.

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, 4239413 + ... + 4245828.

Almost surely, 2^27220653128 is an apocalyptic number.

It is an amenable number.

27220653128 is a deficient number, since it is larger than the sum of its proper divisors (23945356132).

27220653128 is a wasteful number, since it uses less digits than its factorization.

27220653128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485648 (or 8485644 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 27220653128 in words is "twenty-seven billion, two hundred twenty million, six hundred fifty-three thousand, one hundred twenty-eight".