20102105633 has 2 divisors, whose sum is σ = 20102105634. Its totient is φ = 20102105632.

The previous prime is 20102105629. The next prime is 20102105657. The reversal of 20102105633 is 33650120102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14225809984 + 5876295649 = 119272^2 + 76657^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102105633 - 2² = 20102105629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102105599 and 20102105608.

It is not a weakly prime, because it can be changed into another prime (20102105623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051052816 + 10051052817.

It is an arithmetic number, because the mean of its divisors is an integer number (10051052817).

Almost surely, 2^20102105633 is an apocalyptic number.

It is an amenable number.

20102105633 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102105633 is an equidigital number, since it uses as much as digits as its factorization.

20102105633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 20102105633 its reverse (33650120102), we get a palindrome (53752225735).

The spelling of 20102105633 in words is "twenty billion, one hundred two million, one hundred five thousand, six hundred thirty-three".