27317446157 has 2 divisors, whose sum is σ = 27317446158. Its totient is φ = 27317446156.

The previous prime is 27317446151. The next prime is 27317446193. The reversal of 27317446157 is 75164471372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18205025476 + 9112420681 = 134926^2 + 95459^2 .

It is a cyclic number.

It is not a de Polignac number, because 27317446157 - 2⁴ = 27317446141 is a prime.

It is a super-3 number, since 3×27317446157³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27317446151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13658723078 + 13658723079.

It is an arithmetic number, because the mean of its divisors is an integer number (13658723079).

Almost surely, 2^27317446157 is an apocalyptic number.

It is an amenable number.

27317446157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27317446157 is an equidigital number, since it uses as much as digits as its factorization.

27317446157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 47.

The spelling of 27317446157 in words is "twenty-seven billion, three hundred seventeen million, four hundred forty-six thousand, one hundred fifty-seven".