27730047621 has 8 divisors (see below), whose sum is σ = 37494149184. Its totient is φ = 18226322240.

The previous prime is 27730047617. The next prime is 27730047637. The reversal of 27730047621 is 12674003772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27730047621 - 2² = 27730047617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27730047621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27730047601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65093796 + ... + 65094221.

It is an arithmetic number, because the mean of its divisors is an integer number (4686768648).

Almost surely, 2^27730047621 is an apocalyptic number.

It is an amenable number.

27730047621 is a deficient number, since it is larger than the sum of its proper divisors (9764101563).

27730047621 is a wasteful number, since it uses less digits than its factorization.

27730047621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130188091.

The product of its (nonzero) digits is 98784, while the sum is 39.

The spelling of 27730047621 in words is "twenty-seven billion, seven hundred thirty million, forty-seven thousand, six hundred twenty-one".