20105953252093 has 2 divisors, whose sum is σ = 20105953252094. Its totient is φ = 20105953252092.

The previous prime is 20105953252003. The next prime is 20105953252097. The reversal of 20105953252093 is 39025235950102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10196187763609 + 9909765488484 = 3193147^2 + 3147978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20105953252093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20105953252097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052976626046 + 10052976626047.

It is an arithmetic number, because the mean of its divisors is an integer number (10052976626047).

Almost surely, 2^{20105953252093} is an apocalyptic number.

It is an amenable number.

20105953252093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20105953252093 is an equidigital number, since it uses as much as digits as its factorization.

20105953252093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729000, while the sum is 46.

The spelling of 20105953252093 in words is "twenty trillion, one hundred five billion, nine hundred fifty-three million, two hundred fifty-two thousand, ninety-three".