7279251871 has 2 divisors, whose sum is σ = 7279251872. Its totient is φ = 7279251870.

The previous prime is 7279251851. The next prime is 7279251893. The reversal of 7279251871 is 1781529727.

It is a weak prime.

It is an emirp because it is prime and its reverse (1781529727) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7279251871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7279251851) 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, 3639625935 + 3639625936.

It is an arithmetic number, because the mean of its divisors is an integer number (3639625936).

Almost surely, 2^7279251871 is an apocalyptic number.

7279251871 is a deficient number, since it is larger than the sum of its proper divisors (1).

7279251871 is an equidigital number, since it uses as much as digits as its factorization.

7279251871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 49.

The square root of 7279251871 is about 85318.5318146064. The cubic root of 7279251871 is about 1938.0378246702.

The spelling of 7279251871 in words is "seven billion, two hundred seventy-nine million, two hundred fifty-one thousand, eight hundred seventy-one".