16743821449 has 8 divisors (see below), whose sum is σ = 17215511040. Its totient is φ = 16275146400.

The previous prime is 16743821447. The next prime is 16743821473. The reversal of 16743821449 is 94412834761.

It is a happy number.

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 16743821449 - 2¹ = 16743821447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16743821447) 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, 742369 + ... + 764590.

It is an arithmetic number, because the mean of its divisors is an integer number (2151938880).

Almost surely, 2^16743821449 is an apocalyptic number.

It is an amenable number.

16743821449 is a deficient number, since it is larger than the sum of its proper divisors (471689591).

16743821449 is a wasteful number, since it uses less digits than its factorization.

16743821449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507271.

The product of its digits is 1161216, while the sum is 49.

The spelling of 16743821449 in words is "sixteen billion, seven hundred forty-three million, eight hundred twenty-one thousand, four hundred forty-nine".