53317647209 has 4 divisors (see below), whose sum is σ = 53366429316. Its totient is φ = 53268865104.

The previous prime is 53317647199. The next prime is 53317647239. The reversal of 53317647209 is 90274671335.

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 50601152809 + 2716494400 = 224947^2 + 52120^2 .

It is a cyclic number.

It is not a de Polignac number, because 53317647209 - 2⁸ = 53317646953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53317647239) 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, 24389414 + ... + 24391599.

It is an arithmetic number, because the mean of its divisors is an integer number (13341607329).

Almost surely, 2^53317647209 is an apocalyptic number.

It is an amenable number.

53317647209 is a deficient number, since it is larger than the sum of its proper divisors (48782107).

53317647209 is a wasteful number, since it uses less digits than its factorization.

53317647209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48782106.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 53317647209 in words is "fifty-three billion, three hundred seventeen million, six hundred forty-seven thousand, two hundred nine".