10663502521 has 8 divisors (see below), whose sum is σ = 12353803904. Its totient is φ = 9014937120.

The previous prime is 10663502497. The next prime is 10663502557. The reversal of 10663502521 is 12520536601.

10663502521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10663502521 - 2⁷ = 10663502393 is a prime.

It is a super-2 number, since 2×10663502521² (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 (10663505521) by changing a digit.

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, 10433445 + ... + 10434466.

It is an arithmetic number, because the mean of its divisors is an integer number (1544225488).

Almost surely, 2^10663502521 is an apocalyptic number.

It is an amenable number.

10663502521 is a deficient number, since it is larger than the sum of its proper divisors (1690301383).

10663502521 is an equidigital number, since it uses as much as digits as its factorization.

10663502521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20867991.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 10663502521 in words is "ten billion, six hundred sixty-three million, five hundred two thousand, five hundred twenty-one".