7217749353 has 16 divisors (see below), whose sum is σ = 9647389440. Its totient is φ = 4799988816.

The previous prime is 7217749351. The next prime is 7217749387. The reversal of 7217749353 is 3539477127.

It is not a de Polignac number, because 7217749353 - 2¹ = 7217749351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7217749351) 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, 3084658 + ... + 3086996.

It is an arithmetic number, because the mean of its divisors is an integer number (602961840).

Almost surely, 2^7217749353 is an apocalyptic number.

It is an amenable number.

7217749353 is a deficient number, since it is larger than the sum of its proper divisors (2429640087).

7217749353 is a wasteful number, since it uses less digits than its factorization.

7217749353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4436.

The product of its digits is 1111320, while the sum is 48.

The square root of 7217749353 is about 84957.3384293552. The cubic root of 7217749353 is about 1932.5642089648.

The spelling of 7217749353 in words is "seven billion, two hundred seventeen million, seven hundred forty-nine thousand, three hundred fifty-three".