7145665449 has 16 divisors (see below), whose sum is σ = 10263220800. Its totient is φ = 4396142016.

The previous prime is 7145665427. The next prime is 7145665459. The reversal of 7145665449 is 9445665417.

It is a happy number.

It is not a de Polignac number, because 7145665449 - 2⁷ = 7145665321 is a prime.

It is a super-3 number, since 3×7145665449³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (7145665409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133947 + ... + 179535.

It is an arithmetic number, because the mean of its divisors is an integer number (641451300).

Almost surely, 2^7145665449 is an apocalyptic number.

It is an amenable number.

7145665449 is a deficient number, since it is larger than the sum of its proper divisors (3117555351).

7145665449 is a wasteful number, since it uses less digits than its factorization.

7145665449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49624.

The product of its digits is 3628800, while the sum is 51.

The square root of 7145665449 is about 84532.0380033511. The cubic root of 7145665449 is about 1926.1091442716.

The spelling of 7145665449 in words is "seven billion, one hundred forty-five million, six hundred sixty-five thousand, four hundred forty-nine".