27042881921 has 8 divisors (see below), whose sum is σ = 29649576000. Its totient is φ = 24460896240.

The previous prime is 27042881917. The next prime is 27042881939. The reversal of 27042881921 is 12918824072.

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

It is not a de Polignac number, because 27042881921 - 2² = 27042881917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27042881911) 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, 6174806 + ... + 6179183.

It is an arithmetic number, because the mean of its divisors is an integer number (3706197000).

Almost surely, 2^27042881921 is an apocalyptic number.

It is an amenable number.

27042881921 is a deficient number, since it is larger than the sum of its proper divisors (2606694079).

27042881921 is a wasteful number, since it uses less digits than its factorization.

27042881921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12354199.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 27042881921 in words is "twenty-seven billion, forty-two million, eight hundred eighty-one thousand, nine hundred twenty-one".