27717534193 has 2 divisors, whose sum is σ = 27717534194. Its totient is φ = 27717534192.

The previous prime is 27717534161. The next prime is 27717534199. The reversal of 27717534193 is 39143571772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20501371489 + 7216162704 = 143183^2 + 84948^2 .

It is a cyclic number.

It is not a de Polignac number, because 27717534193 - 2⁵ = 27717534161 is a prime.

It is a super-2 number, since 2×27717534193² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27717534199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13858767096 + 13858767097.

It is an arithmetic number, because the mean of its divisors is an integer number (13858767097).

Almost surely, 2^27717534193 is an apocalyptic number.

It is an amenable number.

27717534193 is a deficient number, since it is larger than the sum of its proper divisors (1).

27717534193 is an equidigital number, since it uses as much as digits as its factorization.

27717534193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 49.

The spelling of 27717534193 in words is "twenty-seven billion, seven hundred seventeen million, five hundred thirty-four thousand, one hundred ninety-three".