202105807693 has 2 divisors, whose sum is σ = 202105807694. Its totient is φ = 202105807692.

The previous prime is 202105807559. The next prime is 202105807727. The reversal of 202105807693 is 396708501202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116746589124 + 85359218569 = 341682^2 + 292163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202105807693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202105867693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101052903846 + 101052903847.

It is an arithmetic number, because the mean of its divisors is an integer number (101052903847).

Almost surely, 2^202105807693 is an apocalyptic number.

It is an amenable number.

202105807693 is a deficient number, since it is larger than the sum of its proper divisors (1).

202105807693 is an equidigital number, since it uses as much as digits as its factorization.

202105807693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 202105807693 in words is "two hundred two billion, one hundred five million, eight hundred seven thousand, six hundred ninety-three".