7217764449 has 16 divisors (see below), whose sum is σ = 11105283072. Its totient is φ = 4084392528.

The previous prime is 7217764429. The next prime is 7217764459. The reversal of 7217764449 is 9444677127.

It is not a de Polignac number, because 7217764449 - 2¹⁵ = 7217731681 is a prime.

It is a super-2 number, since 2×7217764449² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7217764429) 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, 1666299 + ... + 1670624.

It is an arithmetic number, because the mean of its divisors is an integer number (694080192).

Almost surely, 2^7217764449 is an apocalyptic number.

It is an amenable number.

7217764449 is a deficient number, since it is larger than the sum of its proper divisors (3887518623).

7217764449 is a wasteful number, since it uses less digits than its factorization.

7217764449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337036.

The product of its digits is 2370816, while the sum is 51.

The square root of 7217764449 is about 84957.4272739000. The cubic root of 7217764449 is about 1932.5655562901.

The spelling of 7217764449 in words is "seven billion, two hundred seventeen million, seven hundred sixty-four thousand, four hundred forty-nine".