530309866861 has 4 divisors (see below), whose sum is σ = 534485535232. Its totient is φ = 526134198492.

The previous prime is 530309866819. The next prime is 530309866873. The reversal of 530309866861 is 168668903035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 168668903035 = 5 ⋅33733780607.

It is a cyclic number.

It is not a de Polignac number, because 530309866861 - 2⁷ = 530309866733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530309366861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087833995 + ... + 2087834248.

It is an arithmetic number, because the mean of its divisors is an integer number (133621383808).

Almost surely, 2^530309866861 is an apocalyptic number.

It is an amenable number.

530309866861 is a deficient number, since it is larger than the sum of its proper divisors (4175668371).

530309866861 is a wasteful number, since it uses less digits than its factorization.

530309866861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175668370.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 530309866861 in words is "five hundred thirty billion, three hundred nine million, eight hundred sixty-six thousand, eight hundred sixty-one".