7723661137 has 2 divisors, whose sum is σ = 7723661138. Its totient is φ = 7723661136.

The previous prime is 7723661123. The next prime is 7723661167. The reversal of 7723661137 is 7311663277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7437510081 + 286151056 = 86241^2 + 16916^2 .

It is a cyclic number.

It is not a de Polignac number, because 7723661137 - 2¹⁵ = 7723628369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7723661093 and 7723661102.

It is not a weakly prime, because it can be changed into another prime (7723661107) 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, 3861830568 + 3861830569.

It is an arithmetic number, because the mean of its divisors is an integer number (3861830569).

Almost surely, 2^7723661137 is an apocalyptic number.

It is an amenable number.

7723661137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7723661137 is an equidigital number, since it uses as much as digits as its factorization.

7723661137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 43.

The square root of 7723661137 is about 87884.3623006960. The cubic root of 7723661137 is about 1976.7014030272.

The spelling of 7723661137 in words is "seven billion, seven hundred twenty-three million, six hundred sixty-one thousand, one hundred thirty-seven".