20109967333 has 2 divisors, whose sum is σ = 20109967334. Its totient is φ = 20109967332.

The previous prime is 20109967247. The next prime is 20109967349. The reversal of 20109967333 is 33376990102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12397263649 + 7712703684 = 111343^2 + 87822^2 .

It is a cyclic number.

It is not a de Polignac number, because 20109967333 - 2²⁵ = 20076412901 is a prime.

It is a super-2 number, since 2×20109967333² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20109967333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20109967363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10054983666 + 10054983667.

It is an arithmetic number, because the mean of its divisors is an integer number (10054983667).

Almost surely, 2^20109967333 is an apocalyptic number.

It is an amenable number.

20109967333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20109967333 is an equidigital number, since it uses as much as digits as its factorization.

20109967333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 43.

The spelling of 20109967333 in words is "twenty billion, one hundred nine million, nine hundred sixty-seven thousand, three hundred thirty-three".