16543543445 has 16 divisors (see below), whose sum is σ = 23322926592. Its totient is φ = 11106154560.

The previous prime is 16543543439. The next prime is 16543543517. The reversal of 16543543445 is 54434534561.

It is not a de Polignac number, because 16543543445 - 2¹² = 16543539349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16543543396 and 16543543405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11568197 + ... + 11569626.

It is an arithmetic number, because the mean of its divisors is an integer number (1457682912).

Almost surely, 2^16543543445 is an apocalyptic number.

It is an amenable number.

16543543445 is a deficient number, since it is larger than the sum of its proper divisors (6779383147).

16543543445 is a wasteful number, since it uses less digits than its factorization.

16543543445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23137852.

The product of its digits is 1728000, while the sum is 44.

The spelling of 16543543445 in words is "sixteen billion, five hundred forty-three million, five hundred forty-three thousand, four hundred forty-five".