10010561009 has 4 divisors (see below), whose sum is σ = 10445802816. Its totient is φ = 9575319204.

The previous prime is 10010561003. The next prime is 10010561021. The reversal of 10010561009 is 90016501001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10010561009 - 2⁸ = 10010560753 is a prime.

It is a super-2 number, since 2×10010561009² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 435241783 = 10010561009 / (1 + 0 + 0 + 1 + 0 + 5 + 6 + 1 + 0 + 0 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10010561003) 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, 217620869 + ... + 217620914.

It is an arithmetic number, because the mean of its divisors is an integer number (2611450704).

Almost surely, 2^10010561009 is an apocalyptic number.

It is an amenable number.

10010561009 is a deficient number, since it is larger than the sum of its proper divisors (435241807).

10010561009 is an equidigital number, since it uses as much as digits as its factorization.

10010561009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435241806.

The product of its (nonzero) digits is 270, while the sum is 23.

The spelling of 10010561009 in words is "ten billion, ten million, five hundred sixty-one thousand, nine".