27948939481 has 8 divisors (see below), whose sum is σ = 28223733824. Its totient is φ = 27674211600.

The previous prime is 27948939467. The next prime is 27948939497. The reversal of 27948939481 is 18493984972.

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 27948939481 - 2³¹ = 25801455833 is a prime.

It is a super-2 number, since 2×27948939481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27948939451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1518031 + ... + 1536331.

It is an arithmetic number, because the mean of its divisors is an integer number (3527966728).

Almost surely, 2^27948939481 is an apocalyptic number.

It is an amenable number.

27948939481 is a deficient number, since it is larger than the sum of its proper divisors (274794343).

27948939481 is a wasteful number, since it uses less digits than its factorization.

27948939481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33231.

The product of its digits is 31352832, while the sum is 64.

The spelling of 27948939481 in words is "twenty-seven billion, nine hundred forty-eight million, nine hundred thirty-nine thousand, four hundred eighty-one".