7720961167 has 2 divisors, whose sum is σ = 7720961168. Its totient is φ = 7720961166.

The previous prime is 7720961159. The next prime is 7720961173. The reversal of 7720961167 is 7611690277.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7720961167 - 2³ = 7720961159 is a prime.

It is a super-3 number, since 3×7720961167³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7720961117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3860480583 + 3860480584.

It is an arithmetic number, because the mean of its divisors is an integer number (3860480584).

Almost surely, 2^7720961167 is an apocalyptic number.

7720961167 is a deficient number, since it is larger than the sum of its proper divisors (1).

7720961167 is an equidigital number, since it uses as much as digits as its factorization.

7720961167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 46.

The square root of 7720961167 is about 87869.0000341417. Note that the first 4 decimals coincide. The cubic root of 7720961167 is about 1976.4710435123.

The spelling of 7720961167 in words is "seven billion, seven hundred twenty million, nine hundred sixty-one thousand, one hundred sixty-seven".