27383911621 has 16 divisors (see below), whose sum is σ = 30365422848. Its totient is φ = 24486278400.

The previous prime is 27383911591. The next prime is 27383911637. The reversal of 27383911621 is 12611938372.

It is a cyclic number.

It is not a de Polignac number, because 27383911621 - 2⁵ = 27383911589 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 (27383911691) 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, 248241 + ... + 341161.

It is an arithmetic number, because the mean of its divisors is an integer number (1897838928).

Almost surely, 2^27383911621 is an apocalyptic number.

It is an amenable number.

27383911621 is a deficient number, since it is larger than the sum of its proper divisors (2981511227).

27383911621 is a wasteful number, since it uses less digits than its factorization.

27383911621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93372.

The product of its digits is 108864, while the sum is 43.

The spelling of 27383911621 in words is "twenty-seven billion, three hundred eighty-three million, nine hundred eleven thousand, six hundred twenty-one".