27578252347 has 2 divisors, whose sum is σ = 27578252348. Its totient is φ = 27578252346.

The previous prime is 27578252323. The next prime is 27578252357. The reversal of 27578252347 is 74325287572.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27578252347 is a prime.

It is a super-2 number, since 2×27578252347² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27578252294 and 27578252303.

It is not a weakly prime, because it can be changed into another prime (27578252357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13789126173 + 13789126174.

It is an arithmetic number, because the mean of its divisors is an integer number (13789126174).

Almost surely, 2^27578252347 is an apocalyptic number.

27578252347 is a deficient number, since it is larger than the sum of its proper divisors (1).

27578252347 is an equidigital number, since it uses as much as digits as its factorization.

27578252347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6585600, while the sum is 52.

The spelling of 27578252347 in words is "twenty-seven billion, five hundred seventy-eight million, two hundred fifty-two thousand, three hundred forty-seven".