100206373409 has 2 divisors, whose sum is σ = 100206373410. Its totient is φ = 100206373408.

The previous prime is 100206373381. The next prime is 100206373439. The reversal of 100206373409 is 904373602001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51971232784 + 48235140625 = 227972^2 + 219625^2 .

It is an emirp because it is prime and its reverse (904373602001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100206373409 - 2²⁴ = 100189596193 is a prime.

It is not a weakly prime, because it can be changed into another prime (100206373439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50103186704 + 50103186705.

It is an arithmetic number, because the mean of its divisors is an integer number (50103186705).

Almost surely, 2^100206373409 is an apocalyptic number.

It is an amenable number.

100206373409 is a deficient number, since it is larger than the sum of its proper divisors (1).

100206373409 is an equidigital number, since it uses as much as digits as its factorization.

100206373409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 100206373409 in words is "one hundred billion, two hundred six million, three hundred seventy-three thousand, four hundred nine".