10515211165 has 8 divisors (see below), whose sum is σ = 12926015928. Its totient is φ = 8206993920.

The previous prime is 10515211141. The next prime is 10515211207. The reversal of 10515211165 is 56111251501.

10515211165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1374703929 + 9140507236 = 37077^2 + 95606^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-10515211165 is a prime.

It is a super-2 number, since 2×10515211165² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25646652 + ... + 25647061.

It is an arithmetic number, because the mean of its divisors is an integer number (1615751991).

Almost surely, 2^10515211165 is an apocalyptic number.

It is an amenable number.

10515211165 is a deficient number, since it is larger than the sum of its proper divisors (2410804763).

10515211165 is an equidigital number, since it uses as much as digits as its factorization.

10515211165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51293759.

The product of its (nonzero) digits is 1500, while the sum is 28.

Adding to 10515211165 its reverse (56111251501), we get a palindrome (66626462666).

The spelling of 10515211165 in words is "ten billion, five hundred fifteen million, two hundred eleven thousand, one hundred sixty-five".