5130666565 has 4 divisors (see below), whose sum is σ = 6156799884. Its totient is φ = 4104533248.

The previous prime is 5130666547. The next prime is 5130666581. The reversal of 5130666565 is 5656660315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1123523361 + 4007143204 = 33519^2 + 63302^2 .

It is a cyclic number.

It is not a de Polignac number, because 5130666565 - 2⁹ = 5130666053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513066652 + ... + 513066661.

It is an arithmetic number, because the mean of its divisors is an integer number (1539199971).

Almost surely, 2^5130666565 is an apocalyptic number.

It is an amenable number.

5130666565 is a deficient number, since it is larger than the sum of its proper divisors (1026133319).

5130666565 is a wasteful number, since it uses less digits than its factorization.

5130666565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026133318.

The product of its (nonzero) digits is 486000, while the sum is 43.

The square root of 5130666565 is about 71628.6713893257. The cubic root of 5130666565 is about 1724.7438185689.

The spelling of 5130666565 in words is "five billion, one hundred thirty million, six hundred sixty-six thousand, five hundred sixty-five".