7216616731 has 2 divisors, whose sum is σ = 7216616732. Its totient is φ = 7216616730.

The previous prime is 7216616717. The next prime is 7216616747. The reversal of 7216616731 is 1376166127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7216616731 - 2⁹ = 7216616219 is a prime.

It is a super-2 number, since 2×7216616731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7216616831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608308365 + 3608308366.

It is an arithmetic number, because the mean of its divisors is an integer number (3608308366).

Almost surely, 2^7216616731 is an apocalyptic number.

7216616731 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216616731 is an equidigital number, since it uses as much as digits as its factorization.

7216616731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 7216616731 is about 84950.6723398938. The cubic root of 7216616731 is about 1932.4631165450.

The spelling of 7216616731 in words is "seven billion, two hundred sixteen million, six hundred sixteen thousand, seven hundred thirty-one".