7161278279 has 2 divisors, whose sum is σ = 7161278280. Its totient is φ = 7161278278.

The previous prime is 7161278233. The next prime is 7161278303. The reversal of 7161278279 is 9728721617.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7161278279 - 2¹⁶ = 7161212743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7161278779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3580639139 + 3580639140.

It is an arithmetic number, because the mean of its divisors is an integer number (3580639140).

Almost surely, 2^7161278279 is an apocalyptic number.

7161278279 is a deficient number, since it is larger than the sum of its proper divisors (1).

7161278279 is an equidigital number, since it uses as much as digits as its factorization.

7161278279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 50.

The square root of 7161278279 is about 84624.3362100998. The cubic root of 7161278279 is about 1927.5109329770.

The spelling of 7161278279 in words is "seven billion, one hundred sixty-one million, two hundred seventy-eight thousand, two hundred seventy-nine".