16543226439 has 24 divisors (see below), whose sum is σ = 25306426080. Its totient is φ = 10378003968.

The previous prime is 16543226429. The next prime is 16543226503. The reversal of 16543226439 is 93462234561.

16543226439 is a `hidden beast` number, since 16 + 543 + 2 + 2 + 64 + 39 = 666.

It is not a de Polignac number, because 16543226439 - 2¹⁶ = 16543160903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16543226394 and 16543226403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16543226429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1230934 + ... + 1244300.

It is an arithmetic number, because the mean of its divisors is an integer number (1054434420).

Almost surely, 2^16543226439 is an apocalyptic number.

16543226439 is a deficient number, since it is larger than the sum of its proper divisors (8763199641).

16543226439 is a wasteful number, since it uses less digits than its factorization.

16543226439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21479 (or 21476 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 16543226439 in words is "sixteen billion, five hundred forty-three million, two hundred twenty-six thousand, four hundred thirty-nine".