10650530521 has 8 divisors (see below), whose sum is σ = 10867266504. Its totient is φ = 10435153920.

The previous prime is 10650530509. The next prime is 10650530533. The reversal of 10650530521 is 12503505601.

It is an interprime number because it is at equal distance from previous prime (10650530509) and next prime (10650530533).

It can be written as a sum of positive squares in 4 ways, for example, as 40500496 + 10610030025 = 6364^2 + 103005^2 .

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 10650530521 - 2³¹ = 8503046873 is a prime.

It is a super-2 number, since 2×10650530521² (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 10650530521.

It is not an unprimeable number, because it can be changed into a prime (10650530591) 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, 324010 + ... + 355363.

It is an arithmetic number, because the mean of its divisors is an integer number (1358408313).

Almost surely, 2^10650530521 is an apocalyptic number.

It is an amenable number.

10650530521 is a deficient number, since it is larger than the sum of its proper divisors (216735983).

10650530521 is an equidigital number, since it uses as much as digits as its factorization.

10650530521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679691.

The product of its (nonzero) digits is 4500, while the sum is 28.

It can be divided in two parts, 106505 and 30521, that added together give a triangular number (137026 = T₅₂₃).

The spelling of 10650530521 in words is "ten billion, six hundred fifty million, five hundred thirty thousand, five hundred twenty-one".