20733808603 has 2 divisors, whose sum is σ = 20733808604. Its totient is φ = 20733808602.

The previous prime is 20733808591. The next prime is 20733808631. The reversal of 20733808603 is 30680833702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20733808603 is a prime.

It is not a weakly prime, because it can be changed into another prime (20733808003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10366904301 + 10366904302.

It is an arithmetic number, because the mean of its divisors is an integer number (10366904302).

Almost surely, 2^20733808603 is an apocalyptic number.

20733808603 is a deficient number, since it is larger than the sum of its proper divisors (1).

20733808603 is an equidigital number, since it uses as much as digits as its factorization.

20733808603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 20733808603 in words is "twenty billion, seven hundred thirty-three million, eight hundred eight thousand, six hundred three".