10505510009 has 8 divisors (see below), whose sum is σ = 11135369448. Its totient is φ = 9876971520.

The previous prime is 10505509967. The next prime is 10505510021. The reversal of 10505510009 is 90001550501.

It can be written as a sum of positive squares in 4 ways, for example, as 2334784 + 10503175225 = 1528^2 + 102485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10505510009 - 2²⁰ = 10504461433 is a prime.

It is a super-2 number, since 2×10505510009² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10505510009.

It is not an unprimeable number, because it can be changed into a prime (10505516009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313832 + ... + 345689.

It is an arithmetic number, because the mean of its divisors is an integer number (1391921181).

Almost surely, 2^10505510009 is an apocalyptic number.

It is an amenable number.

10505510009 is a deficient number, since it is larger than the sum of its proper divisors (629859439).

10505510009 is an equidigital number, since it uses as much as digits as its factorization.

10505510009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660475.

The product of its (nonzero) digits is 1125, while the sum is 26.

The spelling of 10505510009 in words is "ten billion, five hundred five million, five hundred ten thousand, nine".