7145665469 has 2 divisors, whose sum is σ = 7145665470. Its totient is φ = 7145665468.

The previous prime is 7145665459. The next prime is 7145665487. The reversal of 7145665469 is 9645665417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7145320900 + 344569 = 84530^2 + 587^2 .

It is a cyclic number.

It is not a de Polignac number, because 7145665469 - 2⁸ = 7145665213 is a prime.

It is a super-2 number, since 2×7145665469² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7145665469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7145665409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3572832734 + 3572832735.

It is an arithmetic number, because the mean of its divisors is an integer number (3572832735).

Almost surely, 2^7145665469 is an apocalyptic number.

It is an amenable number.

7145665469 is a deficient number, since it is larger than the sum of its proper divisors (1).

7145665469 is an equidigital number, since it uses as much as digits as its factorization.

7145665469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 53.

The square root of 7145665469 is about 84532.0381216495. The cubic root of 7145665469 is about 1926.1091460686.

The spelling of 7145665469 in words is "seven billion, one hundred forty-five million, six hundred sixty-five thousand, four hundred sixty-nine".