10663516645 has 16 divisors (see below), whose sum is σ = 13552016688. Its totient is φ = 8027176960.

The previous prime is 10663516639. The next prime is 10663516649. The reversal of 10663516645 is 54661536601.

It can be written as a sum of positive squares in 8 ways, for example, as 2291632641 + 8371884004 = 47871^2 + 91498^2 .

It is not a de Polignac number, because 10663516645 - 2⁵ = 10663516613 is a prime.

It is a super-2 number, since 2×10663516645² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10663516649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450957 + ... + 474013.

It is an arithmetic number, because the mean of its divisors is an integer number (847001043).

Almost surely, 2^10663516645 is an apocalyptic number.

It is an amenable number.

10663516645 is a deficient number, since it is larger than the sum of its proper divisors (2888500043).

10663516645 is a wasteful number, since it uses less digits than its factorization.

10663516645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28520.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 10663516645 in words is "ten billion, six hundred sixty-three million, five hundred sixteen thousand, six hundred forty-five".