10661163544 has 32 divisors (see below), whose sum is σ = 20149015680. Its totient is φ = 5288145664.

The previous prime is 10661163529. The next prime is 10661163563. The reversal of 10661163544 is 44536116601.

10661163544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10661163544² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2581209 + ... + 2585335.

It is an arithmetic number, because the mean of its divisors is an integer number (629656740).

Almost surely, 2^10661163544 is an apocalyptic number.

It is an amenable number.

10661163544 is a deficient number, since it is larger than the sum of its proper divisors (9487852136).

10661163544 is a wasteful number, since it uses less digits than its factorization.

10661163544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6627 (or 6623 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 10661163544 in words is "ten billion, six hundred sixty-one million, one hundred sixty-three thousand, five hundred forty-four".