27317172653 has 16 divisors (see below), whose sum is σ = 29210388480. Its totient is φ = 25456037376.

The previous prime is 27317172629. The next prime is 27317172691. The reversal of 27317172653 is 35627171372.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27317172653 is a prime.

It is a super-4 number, since 4×27317172653⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27317171653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4961300 + ... + 4966802.

It is an arithmetic number, because the mean of its divisors is an integer number (1825649280).

Almost surely, 2^27317172653 is an apocalyptic number.

It is an amenable number.

27317172653 is a deficient number, since it is larger than the sum of its proper divisors (1893215827).

27317172653 is a wasteful number, since it uses less digits than its factorization.

27317172653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8356.

The product of its digits is 370440, while the sum is 44.

The spelling of 27317172653 in words is "twenty-seven billion, three hundred seventeen million, one hundred seventy-two thousand, six hundred fifty-three".