100100000009 has 4 divisors (see below), whose sum is σ = 101091089220. Its totient is φ = 99108910800.

The previous prime is 100100000003. The next prime is 100100000023. The reversal of 100100000009 is 900000001001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91593996025 + 8506003984 = 302645^2 + 92228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100100000009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100100000003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495544454 + ... + 495544655.

It is an arithmetic number, because the mean of its divisors is an integer number (25272772305).

Almost surely, 2^100100000009 is an apocalyptic number.

It is an amenable number.

100100000009 is a deficient number, since it is larger than the sum of its proper divisors (991089211).

100100000009 is an equidigital number, since it uses as much as digits as its factorization.

100100000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991089210.

The product of its (nonzero) digits is 9, while the sum is 11.

The spelling of 100100000009 in words is "one hundred billion, one hundred million, nine", and thus it is an aban number.