10506213065 has 4 divisors (see below), whose sum is σ = 12607455684. Its totient is φ = 8404970448.

The previous prime is 10506212989. The next prime is 10506213089. The reversal of 10506213065 is 56031260501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56031260501 = 487 ⋅115053923.

It can be written as a sum of positive squares in 2 ways, for example, as 1561593289 + 8944619776 = 39517^2 + 94576^2 .

It is a cyclic number.

It is not a de Polignac number, because 10506213065 - 2¹⁴ = 10506196681 is a prime.

It is a super-2 number, since 2×10506213065² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050621302 + ... + 1050621311.

It is an arithmetic number, because the mean of its divisors is an integer number (3151863921).

Almost surely, 2^10506213065 is an apocalyptic number.

It is an amenable number.

10506213065 is a deficient number, since it is larger than the sum of its proper divisors (2101242619).

10506213065 is an equidigital number, since it uses as much as digits as its factorization.

10506213065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101242618.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 10506213065 its reverse (56031260501), we get a palindrome (66537473566).

The spelling of 10506213065 in words is "ten billion, five hundred six million, two hundred thirteen thousand, sixty-five".