10536757921 has 4 divisors (see below), whose sum is σ = 10581980292. Its totient is φ = 10491535552.

The previous prime is 10536757901. The next prime is 10536757937. The reversal of 10536757921 is 12975763501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12975763501 = 102461 ⋅126641.

It can be written as a sum of positive squares in 2 ways, for example, as 4975327296 + 5561430625 = 70536^2 + 74575^2 .

It is a cyclic number.

It is not a de Polignac number, because 10536757921 - 2¹⁵ = 10536725153 is a prime.

It is a super-2 number, since 2×10536757921² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10536757901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22610836 + ... + 22611301.

It is an arithmetic number, because the mean of its divisors is an integer number (2645495073).

Almost surely, 2^10536757921 is an apocalyptic number.

It is an amenable number.

10536757921 is a deficient number, since it is larger than the sum of its proper divisors (45222371).

10536757921 is an equidigital number, since it uses as much as digits as its factorization.

10536757921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45222370.

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 10536757921 in words is "ten billion, five hundred thirty-six million, seven hundred fifty-seven thousand, nine hundred twenty-one".