10135021565 has 8 divisors (see below), whose sum is σ = 12163333848. Its totient is φ = 8107145280.

The previous prime is 10135021531. The next prime is 10135021577. The reversal of 10135021565 is 56512053101.

It can be written as a sum of positive squares in 4 ways, for example, as 3125480836 + 7009540729 = 55906^2 + 83723^2 .

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

It is not a de Polignac number, because 10135021565 - 2²² = 10130827261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55466 + ... + 152795.

It is an arithmetic number, because the mean of its divisors is an integer number (1520416731).

Almost surely, 2^10135021565 is an apocalyptic number.

It is an amenable number.

10135021565 is a deficient number, since it is larger than the sum of its proper divisors (2028312283).

10135021565 is an equidigital number, since it uses as much as digits as its factorization.

10135021565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217999.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 10135021565 its reverse (56512053101), we get a palindrome (66647074666).

The spelling of 10135021565 in words is "ten billion, one hundred thirty-five million, twenty-one thousand, five hundred sixty-five".