100020194009 has 2 divisors, whose sum is σ = 100020194010. Its totient is φ = 100020194008.

The previous prime is 100020193937. The next prime is 100020194101. The reversal of 100020194009 is 900491020001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89329254400 + 10690939609 = 298880^2 + 103397^2 .

It is an emirp because it is prime and its reverse (900491020001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100020194009 - 2²⁰ = 100019145433 is a prime.

It is not a weakly prime, because it can be changed into another prime (100020194809) 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, 50010097004 + 50010097005.

It is an arithmetic number, because the mean of its divisors is an integer number (50010097005).

Almost surely, 2^100020194009 is an apocalyptic number.

It is an amenable number.

100020194009 is a deficient number, since it is larger than the sum of its proper divisors (1).

100020194009 is an equidigital number, since it uses as much as digits as its factorization.

100020194009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 100020194009 in words is "one hundred billion, twenty million, one hundred ninety-four thousand, nine".