20696180173 has 8 divisors (see below), whose sum is σ = 21171034368. Its totient is φ = 20222763984.

The previous prime is 20696180161. The next prime is 20696180191. The reversal of 20696180173 is 37108169602.

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-20696180173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20696180143) 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, 330361 + ... + 387982.

It is an arithmetic number, because the mean of its divisors is an integer number (2646379296).

Almost surely, 2^20696180173 is an apocalyptic number.

It is an amenable number.

20696180173 is a deficient number, since it is larger than the sum of its proper divisors (474854195).

20696180173 is an equidigital number, since it uses as much as digits as its factorization.

20696180173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719003.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 20696180173 in words is "twenty billion, six hundred ninety-six million, one hundred eighty thousand, one hundred seventy-three".