7217749351 has 2 divisors, whose sum is σ = 7217749352. Its totient is φ = 7217749350.

The previous prime is 7217749349. The next prime is 7217749387. The reversal of 7217749351 is 1539477127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7217749351 - 2¹ = 7217749349 is a prime.

Together with 7217749349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7217749751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608874675 + 3608874676.

It is an arithmetic number, because the mean of its divisors is an integer number (3608874676).

Almost surely, 2^7217749351 is an apocalyptic number.

7217749351 is a deficient number, since it is larger than the sum of its proper divisors (1).

7217749351 is an equidigital number, since it uses as much as digits as its factorization.

7217749351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 46.

The square root of 7217749351 is about 84957.3384175846. The cubic root of 7217749351 is about 1932.5642087863.

It can be divided in two parts, 7217749 and 351, that added together give a triangular number (7218100 = T₃₇₉₉).

The spelling of 7217749351 in words is "seven billion, two hundred seventeen million, seven hundred forty-nine thousand, three hundred fifty-one".