53660332609 has 27 divisors (see below), whose sum is σ = 59016299337. Its totient is φ = 48768179616.

The previous prime is 53660332571. The next prime is 53660332639. The reversal of 53660332609 is 90623306635.

The square root of 53660332609 is 231647.

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

It can be written as a sum of positive squares in 4 ways, for example, as 428614209 + 53231718400 = 20703^2 + 230720^2 .

It is not a de Polignac number, because 53660332609 - 2²⁹ = 53123461697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53660332639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 310175247 + ... + 310175419.

Almost surely, 2^53660332609 is an apocalyptic number.

53660332609 is the 231647-th square number.

53660332609 is the 115824-th centered octagonal number.

It is an amenable number.

53660332609 is a deficient number, since it is larger than the sum of its proper divisors (5355966728).

53660332609 is an equidigital number, since it uses as much as digits as its factorization.

53660332609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 43.

The spelling of 53660332609 in words is "fifty-three billion, six hundred sixty million, three hundred thirty-two thousand, six hundred nine".