7123640463217 has 2 divisors, whose sum is σ = 7123640463218. Its totient is φ = 7123640463216.

The previous prime is 7123640463157. The next prime is 7123640463221.

It is a happy number.

7123640463217 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6355486378081 + 768154085136 = 2521009^2 + 876444^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 7123640463217 - 2⁷ = 7123640463089 is a prime.

It is not a weakly prime, because it can be changed into another prime (7123640463517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3561820231608 + 3561820231609.

It is an arithmetic number, because the mean of its divisors is an integer number (3561820231609).

Almost surely, 2^{7123640463217} is an apocalyptic number.

It is an amenable number.

7123640463217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7123640463217 is an equidigital number, since it uses as much as digits as its factorization.

7123640463217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 46.

It can be divided in two parts, 7123640 and 463217, that added together give a palindrome (7586857).

The spelling of 7123640463217 in words is "seven trillion, one hundred twenty-three billion, six hundred forty million, four hundred sixty-three thousand, two hundred seventeen".