27980321907 has 8 divisors (see below), whose sum is σ = 37308091600. Its totient is φ = 18653050080.

The previous prime is 27980321881. The next prime is 27980321917. The reversal of 27980321907 is 70912308972.

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

It is not a de Polignac number, because 27980321907 - 2¹⁶ = 27980256371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27980321917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36357 + ... + 239337.

It is an arithmetic number, because the mean of its divisors is an integer number (4663511450).

Almost surely, 2^27980321907 is an apocalyptic number.

27980321907 is a deficient number, since it is larger than the sum of its proper divisors (9327769693).

27980321907 is a wasteful number, since it uses less digits than its factorization.

27980321907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248933.

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 27980321907 in words is "twenty-seven billion, nine hundred eighty million, three hundred twenty-one thousand, nine hundred seven".