100445247689 has 2 divisors, whose sum is σ = 100445247690. Its totient is φ = 100445247688.

The previous prime is 100445247673. The next prime is 100445247697. The reversal of 100445247689 is 986742544001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99929957689 + 515290000 = 316117^2 + 22700^2 .

It is an emirp because it is prime and its reverse (986742544001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100445247689 - 2⁴ = 100445247673 is a prime.

It is not a weakly prime, because it can be changed into another prime (100445247589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50222623844 + 50222623845.

It is an arithmetic number, because the mean of its divisors is an integer number (50222623845).

Almost surely, 2^100445247689 is an apocalyptic number.

It is an amenable number.

100445247689 is a deficient number, since it is larger than the sum of its proper divisors (1).

100445247689 is an equidigital number, since it uses as much as digits as its factorization.

100445247689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 100445247689 in words is "one hundred billion, four hundred forty-five million, two hundred forty-seven thousand, six hundred eighty-nine".