20852537177117 has 8 divisors (see below), whose sum is σ = 21759531565824. Its totient is φ = 19945572983248.

The previous prime is 20852537177089. The next prime is 20852537177119. The reversal of 20852537177117 is 71177173525802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20852537177117 is a prime.

It is a super-3 number, since 3×20852537177117³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852537177119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6131813 + ... + 8905290.

It is an arithmetic number, because the mean of its divisors is an integer number (2719941445728).

Almost surely, 2^{20852537177117} is an apocalyptic number.

It is an amenable number.

20852537177117 is a deficient number, since it is larger than the sum of its proper divisors (906994388707).

20852537177117 is a wasteful number, since it uses less digits than its factorization.

20852537177117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15097419.

The product of its (nonzero) digits is 5762400, while the sum is 56.

The spelling of 20852537177117 in words is "twenty trillion, eight hundred fifty-two billion, five hundred thirty-seven million, one hundred seventy-seven thousand, one hundred seventeen".