5123640169 has 2 divisors, whose sum is σ = 5123640170. Its totient is φ = 5123640168.

The previous prime is 5123640143. The next prime is 5123640209. The reversal of 5123640169 is 9610463215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3326982400 + 1796657769 = 57680^2 + 42387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5123640169 is a prime.

It is a super-2 number, since 2×5123640169² = 52503377162780697122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5123640869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561820084 + 2561820085.

It is an arithmetic number, because the mean of its divisors is an integer number (2561820085).

Almost surely, 2^5123640169 is an apocalyptic number.

It is an amenable number.

5123640169 is a deficient number, since it is larger than the sum of its proper divisors (1).

5123640169 is an equidigital number, since it uses as much as digits as its factorization.

5123640169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 5123640169 is about 71579.6072146250. The cubic root of 5123640169 is about 1723.9561191353.

The spelling of 5123640169 in words is "five billion, one hundred twenty-three million, six hundred forty thousand, one hundred sixty-nine".