27481819309 has 8 divisors (see below), whose sum is σ = 31410986688. Its totient is φ = 23553450240.

The previous prime is 27481819297. The next prime is 27481819327. The reversal of 27481819309 is 90391818472.

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 27481819309 - 2⁹ = 27481818797 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 (27481819109) 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, 123892 + ... + 265165.

It is an arithmetic number, because the mean of its divisors is an integer number (3926373336).

Almost surely, 2^27481819309 is an apocalyptic number.

It is an amenable number.

27481819309 is a deficient number, since it is larger than the sum of its proper divisors (3929167379).

27481819309 is a wasteful number, since it uses less digits than its factorization.

27481819309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399155.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 27481819309 in words is "twenty-seven billion, four hundred eighty-one million, eight hundred nineteen thousand, three hundred nine".