27128622201 has 4 divisors (see below), whose sum is σ = 36171496272. Its totient is φ = 18085748132.

The previous prime is 27128622197. The next prime is 27128622211. The reversal of 27128622201 is 10222682172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27128622201 - 2² = 27128622197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27128622211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4521437031 + ... + 4521437036.

It is an arithmetic number, because the mean of its divisors is an integer number (9042874068).

Almost surely, 2^27128622201 is an apocalyptic number.

It is an amenable number.

27128622201 is a deficient number, since it is larger than the sum of its proper divisors (9042874071).

27128622201 is an equidigital number, since it uses as much as digits as its factorization.

27128622201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042874070.

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 27128622201 in words is "twenty-seven billion, one hundred twenty-eight million, six hundred twenty-two thousand, two hundred one".