71274125617 has 2 divisors, whose sum is σ = 71274125618. Its totient is φ = 71274125616.

The previous prime is 71274125569. The next prime is 71274125623. The reversal of 71274125617 is 71652147217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67625482401 + 3648643216 = 260049^2 + 60404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71274125617 is a prime.

It is a super-5 number, since 5×71274125617⁵ (a number of 55 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (71274125017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35637062808 + 35637062809.

It is an arithmetic number, because the mean of its divisors is an integer number (35637062809).

Almost surely, 2^71274125617 is an apocalyptic number.

It is an amenable number.

71274125617 is a deficient number, since it is larger than the sum of its proper divisors (1).

71274125617 is an equidigital number, since it uses as much as digits as its factorization.

71274125617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164640, while the sum is 43.

The spelling of 71274125617 in words is "seventy-one billion, two hundred seventy-four million, one hundred twenty-five thousand, six hundred seventeen".