7265321279 has 2 divisors, whose sum is σ = 7265321280. Its totient is φ = 7265321278.

The previous prime is 7265321269. The next prime is 7265321291. The reversal of 7265321279 is 9721235627.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7265321279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7265321269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3632660639 + 3632660640.

It is an arithmetic number, because the mean of its divisors is an integer number (3632660640).

Almost surely, 2^7265321279 is an apocalyptic number.

7265321279 is a deficient number, since it is larger than the sum of its proper divisors (1).

7265321279 is an equidigital number, since it uses as much as digits as its factorization.

7265321279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 7265321279 is about 85236.8539952056. The cubic root of 7265321279 is about 1936.8007353183.

The spelling of 7265321279 in words is "seven billion, two hundred sixty-five million, three hundred twenty-one thousand, two hundred seventy-nine".