609372268129 has 27 divisors (see below), whose sum is σ = 662069844793. Its totient is φ = 560749603328.

The previous prime is 609372268123. The next prime is 609372268187. The reversal of 609372268129 is 921862273906.

The square root of 609372268129 is 780623.

It is a perfect power (a square), and thus also a powerful number.

609372268129 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 4 ways, for example, as 328302642529 + 281069625600 = 572977^2 + 530160^2 .

It is not a de Polignac number, because 609372268129 - 2²⁹ = 608835397217 is a prime.

It is a super-2 number, since 2×609372268129² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 609372268129.

It is not an unprimeable number, because it can be changed into a prime (609372268123) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 623717289 + ... + 623718265.

Almost surely, 2^609372268129 is an apocalyptic number.

609372268129 is the 780623-rd square number.

609372268129 is the 390312-nd centered octagonal number.

It is an amenable number.

609372268129 is a deficient number, since it is larger than the sum of its proper divisors (52697576664).

609372268129 is an frugal number, since it uses more digits than its factorization.

609372268129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 609372268129 in words is "six hundred nine billion, three hundred seventy-two million, two hundred sixty-eight thousand, one hundred twenty-nine".