7721964163 has 16 divisors (see below), whose sum is σ = 7893709056. Its totient is φ = 7552258560.

The previous prime is 7721964143. The next prime is 7721964167. The reversal of 7721964163 is 3614691277.

7721964163 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7721964163 - 2²¹ = 7719867011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7721964167) 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, 7791598 + ... + 7792588.

It is an arithmetic number, because the mean of its divisors is an integer number (493356816).

Almost surely, 2^7721964163 is an apocalyptic number.

7721964163 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

7721964163 is a deficient number, since it is larger than the sum of its proper divisors (171744893).

7721964163 is a wasteful number, since it uses less digits than its factorization.

7721964163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854.

The product of its digits is 381024, while the sum is 46.

The square root of 7721964163 is about 87874.7071858564. The cubic root of 7721964163 is about 1976.5566246842.

The spelling of 7721964163 in words is "seven billion, seven hundred twenty-one million, nine hundred sixty-four thousand, one hundred sixty-three".