27655078139 has 8 divisors (see below), whose sum is σ = 29954546832. Its totient is φ = 25380203040.

The previous prime is 27655078127. The next prime is 27655078211. The reversal of 27655078139 is 93187055672.

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 27655078139 - 2¹² = 27655074043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27655078039) 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, 6146057 + ... + 6150554.

It is an arithmetic number, because the mean of its divisors is an integer number (3744318354).

Almost surely, 2^27655078139 is an apocalyptic number.

27655078139 is a deficient number, since it is larger than the sum of its proper divisors (2299468693).

27655078139 is a wasteful number, since it uses less digits than its factorization.

27655078139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12296797.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 27655078139 in words is "twenty-seven billion, six hundred fifty-five million, seventy-eight thousand, one hundred thirty-nine".