10989542543 has 48 divisors (see below), whose sum is σ = 13764261312. Its totient is φ = 8564736000.

The previous prime is 10989542533. The next prime is 10989542587. The reversal of 10989542543 is 34524598901.

10989542543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10989542543 - 2⁶ = 10989542479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10989542491 and 10989542500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10989542513) 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 47 ways as a sum of consecutive naturals, for example, 27405143 + ... + 27405543.

It is an arithmetic number, because the mean of its divisors is an integer number (286755444).

Almost surely, 2^10989542543 is an apocalyptic number.

10989542543 is a deficient number, since it is larger than the sum of its proper divisors (2774718769).

10989542543 is a wasteful number, since it uses less digits than its factorization.

10989542543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 10989542543 in words is "ten billion, nine hundred eighty-nine million, five hundred forty-two thousand, five hundred forty-three".