7216745279 has 2 divisors, whose sum is σ = 7216745280. Its totient is φ = 7216745278.

The previous prime is 7216745267. The next prime is 7216745299. The reversal of 7216745279 is 9725476127.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7216745279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7216745209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608372639 + 3608372640.

It is an arithmetic number, because the mean of its divisors is an integer number (3608372640).

Almost surely, 2^7216745279 is an apocalyptic number.

7216745279 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216745279 is an equidigital number, since it uses as much as digits as its factorization.

7216745279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1481760, while the sum is 50.

The square root of 7216745279 is about 84951.4289403068. The cubic root of 7216745279 is about 1932.4745906565.

The spelling of 7216745279 in words is "seven billion, two hundred sixteen million, seven hundred forty-five thousand, two hundred seventy-nine".