7961291305 has 16 divisors (see below), whose sum is σ = 10564827264. Its totient is φ = 5710711680.

The previous prime is 7961291269. The next prime is 7961291321. The reversal of 7961291305 is 5031921697.

It is not a de Polignac number, because 7961291305 - 2¹⁵ = 7961258537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 987429 + ... + 995458.

It is an arithmetic number, because the mean of its divisors is an integer number (660301704).

Almost surely, 2^7961291305 is an apocalyptic number.

It is an amenable number.

7961291305 is a deficient number, since it is larger than the sum of its proper divisors (2603535959).

7961291305 is a wasteful number, since it uses less digits than its factorization.

7961291305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982976.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 7961291305 is about 89226.0685282054. The cubic root of 7961291305 is about 1996.7690587366.

The spelling of 7961291305 in words is "seven billion, nine hundred sixty-one million, two hundred ninety-one thousand, three hundred five".