16554543704242 has 4 divisors (see below), whose sum is σ = 24831815556366. Its totient is φ = 8277271852120.

The previous prime is 16554543704203. The next prime is 16554543704323. The reversal of 16554543704242 is 24240734545561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12421247335641 + 4133296368601 = 3524379^2 + 2033051^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16554543704242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4138635926059 + ... + 4138635926062.

Almost surely, 2^{16554543704242} is an apocalyptic number.

16554543704242 is a deficient number, since it is larger than the sum of its proper divisors (8277271852124).

16554543704242 is an equidigital number, since it uses as much as digits as its factorization.

16554543704242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8277271852123.

The product of its (nonzero) digits is 16128000, while the sum is 52.

The spelling of 16554543704242 in words is "sixteen trillion, five hundred fifty-four billion, five hundred forty-three million, seven hundred four thousand, two hundred forty-two".