16744642543 has 8 divisors (see below), whose sum is σ = 17369254080. Its totient is φ = 16123178400.

The previous prime is 16744642511. The next prime is 16744642547. The reversal of 16744642543 is 34524644761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16744642543 - 2⁵ = 16744642511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16744642493 and 16744642502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16744642547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776008 + ... + 797293.

It is an arithmetic number, because the mean of its divisors is an integer number (2171156760).

Almost surely, 2^16744642543 is an apocalyptic number.

16744642543 is a deficient number, since it is larger than the sum of its proper divisors (624611537).

16744642543 is a wasteful number, since it uses less digits than its factorization.

16744642543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573697.

The product of its digits is 1935360, while the sum is 46.

The spelling of 16744642543 in words is "sixteen billion, seven hundred forty-four million, six hundred forty-two thousand, five hundred forty-three".