100944202609 has 2 divisors, whose sum is σ = 100944202610. Its totient is φ = 100944202608.

The previous prime is 100944202571. The next prime is 100944202613. The reversal of 100944202609 is 906202449001.

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., 53883408384 + 47060794225 = 232128^2 + 216935^2 .

It is a cyclic number.

It is not a de Polignac number, because 100944202609 - 2¹¹ = 100944200561 is a prime.

It is not a weakly prime, because it can be changed into another prime (100944202669) 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, 50472101304 + 50472101305.

It is an arithmetic number, because the mean of its divisors is an integer number (50472101305).

Almost surely, 2^100944202609 is an apocalyptic number.

It is an amenable number.

100944202609 is a deficient number, since it is larger than the sum of its proper divisors (1).

100944202609 is an equidigital number, since it uses as much as digits as its factorization.

100944202609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 100944202609 in words is "one hundred billion, nine hundred forty-four million, two hundred two thousand, six hundred nine".