7221162716749 has 16 divisors (see below), whose sum is σ = 7244023762944. Its totient is φ = 7198348575600.

The previous prime is 7221162716731. The next prime is 7221162716819. The reversal of 7221162716749 is 9476172611227.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7221162716749 - 2¹⁷ = 7221162585677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7221162716749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221162716849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1575638712 + ... + 1575643294.

It is an arithmetic number, because the mean of its divisors is an integer number (452751485184).

Almost surely, 2^{7221162716749} is an apocalyptic number.

It is an amenable number.

7221162716749 is a deficient number, since it is larger than the sum of its proper divisors (22861046195).

7221162716749 is a wasteful number, since it uses less digits than its factorization.

7221162716749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8688.

The product of its digits is 3556224, while the sum is 55.

The spelling of 7221162716749 in words is "seven trillion, two hundred twenty-one billion, one hundred sixty-two million, seven hundred sixteen thousand, seven hundred forty-nine".