10665864543 has 16 divisors (see below), whose sum is σ = 14842103040. Its totient is φ = 6800211264.

The previous prime is 10665864487. The next prime is 10665864563. The reversal of 10665864543 is 34546856601.

It is not a de Polignac number, because 10665864543 - 2⁶ = 10665864479 is a prime.

It is a super-2 number, since 2×10665864543² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10665864492 and 10665864501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10665864563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534123 + ... + 553731.

It is an arithmetic number, because the mean of its divisors is an integer number (927631440).

Almost surely, 2^10665864543 is an apocalyptic number.

10665864543 is a deficient number, since it is larger than the sum of its proper divisors (4176238497).

10665864543 is a wasteful number, since it uses less digits than its factorization.

10665864543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27518.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 10665864543 in words is "ten billion, six hundred sixty-five million, eight hundred sixty-four thousand, five hundred forty-three".