20117701573 has 8 divisors (see below), whose sum is σ = 20472977408. Its totient is φ = 19765502064.

The previous prime is 20117701547. The next prime is 20117701579. The reversal of 20117701573 is 37510771102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20117701573 - 2²⁵ = 20084147141 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 (20117701579) 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 7 ways as a sum of consecutive naturals, for example, 755886 + ... + 782047.

It is an arithmetic number, because the mean of its divisors is an integer number (2559122176).

Almost surely, 2^20117701573 is an apocalyptic number.

It is an amenable number.

20117701573 is a deficient number, since it is larger than the sum of its proper divisors (355275835).

20117701573 is a wasteful number, since it uses less digits than its factorization.

20117701573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538163.

The product of its (nonzero) digits is 10290, while the sum is 34.

The spelling of 20117701573 in words is "twenty billion, one hundred seventeen million, seven hundred one thousand, five hundred seventy-three".