27516415139 has 4 divisors (see below), whose sum is σ = 27518448024. Its totient is φ = 27514382256.

The previous prime is 27516415117. The next prime is 27516415159. The reversal of 27516415139 is 93151461572.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27516415139 - 2⁸ = 27516414883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27516415139.

It is not an unprimeable number, because it can be changed into a prime (27516415159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996002 + ... + 1023255.

It is an arithmetic number, because the mean of its divisors is an integer number (6879612006).

Almost surely, 2^27516415139 is an apocalyptic number.

27516415139 is a deficient number, since it is larger than the sum of its proper divisors (2032885).

27516415139 is a wasteful number, since it uses less digits than its factorization.

27516415139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032884.

The product of its digits is 226800, while the sum is 44.

The spelling of 27516415139 in words is "twenty-seven billion, five hundred sixteen million, four hundred fifteen thousand, one hundred thirty-nine".