617712339481 has 2 divisors, whose sum is σ = 617712339482. Its totient is φ = 617712339480.

The previous prime is 617712339443. The next prime is 617712339499. The reversal of 617712339481 is 184933217716.

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., 609523718400 + 8188621081 = 780720^2 + 90491^2 .

It is a cyclic number.

It is not a de Polignac number, because 617712339481 - 2²¹ = 617710242329 is a prime.

It is a super-2 number, since 2×617712339481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (617712339281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308856169740 + 308856169741.

It is an arithmetic number, because the mean of its divisors is an integer number (308856169741).

Almost surely, 2^617712339481 is an apocalyptic number.

It is an amenable number.

617712339481 is a deficient number, since it is larger than the sum of its proper divisors (1).

617712339481 is an equidigital number, since it uses as much as digits as its factorization.

617712339481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 52.

The spelling of 617712339481 in words is "six hundred seventeen billion, seven hundred twelve million, three hundred thirty-nine thousand, four hundred eighty-one".