5206412656609 has 4 divisors (see below), whose sum is σ = 5221161701316. Its totient is φ = 5191663611904.

The previous prime is 5206412656603. The next prime is 5206412656691. The reversal of 5206412656609 is 9066562146025.

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 803717629009 + 4402695027600 = 896503^2 + 2098260^2 .

It is a cyclic number.

It is not a de Polignac number, because 5206412656609 - 2¹⁹ = 5206412132321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5206412656603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7374521824 + ... + 7374522529.

It is an arithmetic number, because the mean of its divisors is an integer number (1305290425329).

Almost surely, 2^{5206412656609} is an apocalyptic number.

It is an amenable number.

5206412656609 is a deficient number, since it is larger than the sum of its proper divisors (14749044707).

5206412656609 is a wasteful number, since it uses less digits than its factorization.

5206412656609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14749044706.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 5206412656609 in words is "five trillion, two hundred six billion, four hundred twelve million, six hundred fifty-six thousand, six hundred nine".