7720961163 has 16 divisors (see below), whose sum is σ = 10887811200. Its totient is φ = 4853278080.

The previous prime is 7720961159. The next prime is 7720961167. The reversal of 7720961163 is 3611690277.

It is an interprime number because it is at equal distance from previous prime (7720961159) and next prime (7720961167).

It is not a de Polignac number, because 7720961163 - 2² = 7720961159 is a prime.

It is a super-2 number, since 2×7720961163² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7720961167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308958 + ... + 333011.

It is an arithmetic number, because the mean of its divisors is an integer number (680488200).

Almost surely, 2^7720961163 is an apocalyptic number.

7720961163 is a deficient number, since it is larger than the sum of its proper divisors (3166850037).

7720961163 is a wasteful number, since it uses less digits than its factorization.

7720961163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642202.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 7720961163 is about 87869.0000113806. Note that the first 4 decimals coincide. The cubic root of 7720961163 is about 1976.4710431710.

The spelling of 7720961163 in words is "seven billion, seven hundred twenty million, nine hundred sixty-one thousand, one hundred sixty-three".