609315456509 has 6 divisors (see below), whose sum is σ = 647265900474. Its totient is φ = 573473370560.

The previous prime is 609315456493. The next prime is 609315456551. The reversal of 609315456509 is 905654513906.

609315456509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 150609967225 + 458705489284 = 388085^2 + 677278^2 .

It is not a de Polignac number, because 609315456509 - 2⁴ = 609315456493 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 (609315486509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1054178702 + ... + 1054179279.

It is an arithmetic number, because the mean of its divisors is an integer number (107877650079).

Almost surely, 2^609315456509 is an apocalyptic number.

It is an amenable number.

609315456509 is a deficient number, since it is larger than the sum of its proper divisors (37950443965).

609315456509 is a wasteful number, since it uses less digits than its factorization.

609315456509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108358015 (or 2108357998 counting only the distinct ones).

The product of its (nonzero) digits is 4374000, while the sum is 53.

The spelling of 609315456509 in words is "six hundred nine billion, three hundred fifteen million, four hundred fifty-six thousand, five hundred nine".