7216368491 has 2 divisors, whose sum is σ = 7216368492. Its totient is φ = 7216368490.

The previous prime is 7216368479. The next prime is 7216368563. The reversal of 7216368491 is 1948636127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7216368491 - 2²⁶ = 7149259627 is a prime.

It is not a weakly prime, because it can be changed into another prime (7216368421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608184245 + 3608184246.

It is an arithmetic number, because the mean of its divisors is an integer number (3608184246).

Almost surely, 2^7216368491 is an apocalyptic number.

7216368491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216368491 is an equidigital number, since it uses as much as digits as its factorization.

7216368491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 7216368491 is about 84949.2112441310. The cubic root of 7216368491 is about 1932.4409584174.

The spelling of 7216368491 in words is "seven billion, two hundred sixteen million, three hundred sixty-eight thousand, four hundred ninety-one".