27956924347 has 4 divisors (see below), whose sum is σ = 30498462936. Its totient is φ = 25415385760.

The previous prime is 27956924329. The next prime is 27956924377. The reversal of 27956924347 is 74342965972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27956924347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27956924291 and 27956924300.

It is not an unprimeable number, because it can be changed into a prime (27956924377) 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, 1270769278 + ... + 1270769299.

It is an arithmetic number, because the mean of its divisors is an integer number (7624615734).

Almost surely, 2^27956924347 is an apocalyptic number.

27956924347 is a deficient number, since it is larger than the sum of its proper divisors (2541538589).

27956924347 is a wasteful number, since it uses less digits than its factorization.

27956924347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541538588.

The product of its digits is 22861440, while the sum is 58.

The spelling of 27956924347 in words is "twenty-seven billion, nine hundred fifty-six million, nine hundred twenty-four thousand, three hundred forty-seven".