20685730303 has 8 divisors (see below), whose sum is σ = 23717843072. Its totient is φ = 17672869656.

The previous prime is 20685730301. The next prime is 20685730319. The reversal of 20685730303 is 30303758602.

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 20685730303 - 2¹ = 20685730301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20685730301) 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, 4810725 + ... + 4815022.

It is an arithmetic number, because the mean of its divisors is an integer number (2964730384).

Almost surely, 2^20685730303 is an apocalyptic number.

20685730303 is a deficient number, since it is larger than the sum of its proper divisors (3032112769).

20685730303 is an equidigital number, since it uses as much as digits as its factorization.

20685730303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626061.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 20685730303 in words is "twenty billion, six hundred eighty-five million, seven hundred thirty thousand, three hundred three".