27883620221 has 4 divisors (see below), whose sum is σ = 29351179200. Its totient is φ = 26416061244.

The previous prime is 27883620211. The next prime is 27883620223. The reversal of 27883620221 is 12202638872.

It is a happy number.

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 27883620221 - 2⁶ = 27883620157 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 (27883620223) 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, 733779461 + ... + 733779498.

It is an arithmetic number, because the mean of its divisors is an integer number (7337794800).

Almost surely, 2^27883620221 is an apocalyptic number.

It is an amenable number.

27883620221 is a deficient number, since it is larger than the sum of its proper divisors (1467558979).

27883620221 is a wasteful number, since it uses less digits than its factorization.

27883620221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467558978.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 27883620221 in words is "twenty-seven billion, eight hundred eighty-three million, six hundred twenty thousand, two hundred twenty-one".