7317611642881 has 2 divisors, whose sum is σ = 7317611642882. Its totient is φ = 7317611642880.

The previous prime is 7317611642801. The next prime is 7317611642897. The reversal of 7317611642881 is 1882461167137.

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., 4425095095281 + 2892516547600 = 2103591^2 + 1700740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7317611642881 is a prime.

It is a super-2 number, since 2×7317611642881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7317611642801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3658805821440 + 3658805821441.

It is an arithmetic number, because the mean of its divisors is an integer number (3658805821441).

Almost surely, 2^{7317611642881} is an apocalyptic number.

It is an amenable number.

7317611642881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7317611642881 is an equidigital number, since it uses as much as digits as its factorization.

7317611642881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 55.

The spelling of 7317611642881 in words is "seven trillion, three hundred seventeen billion, six hundred eleven million, six hundred forty-two thousand, eight hundred eighty-one".