20633915101 has 2 divisors, whose sum is σ = 20633915102. Its totient is φ = 20633915100.

The previous prime is 20633915063. The next prime is 20633915123. The reversal of 20633915101 is 10151933602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19845765625 + 788149476 = 140875^2 + 28074^2 .

It is a cyclic number.

It is not a de Polignac number, because 20633915101 - 2⁹ = 20633914589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20633915131) 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 as a sum of consecutive naturals, namely, 10316957550 + 10316957551.

It is an arithmetic number, because the mean of its divisors is an integer number (10316957551).

Almost surely, 2^20633915101 is an apocalyptic number.

It is an amenable number.

20633915101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20633915101 is an equidigital number, since it uses as much as digits as its factorization.

20633915101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The spelling of 20633915101 in words is "twenty billion, six hundred thirty-three million, nine hundred fifteen thousand, one hundred one".