17131727477 has 2 divisors, whose sum is σ = 17131727478. Its totient is φ = 17131727476.

The previous prime is 17131727461. The next prime is 17131727489. The reversal of 17131727477 is 77472713171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12315228676 + 4816498801 = 110974^2 + 69401^2 .

It is a cyclic number.

It is not a de Polignac number, because 17131727477 - 2⁴ = 17131727461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17131027477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8565863738 + 8565863739.

It is an arithmetic number, because the mean of its divisors is an integer number (8565863739).

Almost surely, 2^17131727477 is an apocalyptic number.

It is an amenable number.

17131727477 is a deficient number, since it is larger than the sum of its proper divisors (1).

17131727477 is an equidigital number, since it uses as much as digits as its factorization.

17131727477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403368, while the sum is 47.

The spelling of 17131727477 in words is "seventeen billion, one hundred thirty-one million, seven hundred twenty-seven thousand, four hundred seventy-seven".