10556000559509 has 4 divisors (see below), whose sum is σ = 10556324366016. Its totient is φ = 10555676753004.

The previous prime is 10556000559487. The next prime is 10556000559547. The reversal of 10556000559509 is 90595500065501.

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 10556000559509 - 2⁴⁰ = 9456488931733 is a prime.

It is a super-2 number, since 2×10556000559509² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10556000555509) 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, 161854349 + ... + 161919554.

It is an arithmetic number, because the mean of its divisors is an integer number (2639081091504).

Almost surely, 2^{10556000559509} is an apocalyptic number.

It is an amenable number.

10556000559509 is a deficient number, since it is larger than the sum of its proper divisors (323806507).

10556000559509 is an equidigital number, since it uses as much as digits as its factorization.

10556000559509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323806506.

The product of its (nonzero) digits is 1518750, while the sum is 50.

The spelling of 10556000559509 in words is "ten trillion, five hundred fifty-six billion, five hundred fifty-nine thousand, five hundred nine".