27431476417 has 2 divisors, whose sum is σ = 27431476418. Its totient is φ = 27431476416.

The previous prime is 27431476411. The next prime is 27431476421. The reversal of 27431476417 is 71467413472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18053684496 + 9377791921 = 134364^2 + 96839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27431476417 is a prime.

It is not a weakly prime, because it can be changed into another prime (27431476411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13715738208 + 13715738209.

It is an arithmetic number, because the mean of its divisors is an integer number (13715738209).

Almost surely, 2^27431476417 is an apocalyptic number.

It is an amenable number.

27431476417 is a deficient number, since it is larger than the sum of its proper divisors (1).

27431476417 is an equidigital number, since it uses as much as digits as its factorization.

27431476417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 46.

Adding to 27431476417 its reverse (71467413472), we get a palindrome (98898889889).

The spelling of 27431476417 in words is "twenty-seven billion, four hundred thirty-one million, four hundred seventy-six thousand, four hundred seventeen".