16869408509759 has 4 divisors (see below), whose sum is σ = 18167055318216. Its totient is φ = 15571761701304.

The previous prime is 16869408509749. The next prime is 16869408509813. The reversal of 16869408509759 is 95790580496861.

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

It is a cyclic number.

It is not a de Polignac number, because 16869408509759 - 2⁴ = 16869408509743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16869408509759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16869408509719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648823404209 + ... + 648823404234.

It is an arithmetic number, because the mean of its divisors is an integer number (4541763829554).

Almost surely, 2^{16869408509759} is an apocalyptic number.

16869408509759 is a deficient number, since it is larger than the sum of its proper divisors (1297646808457).

16869408509759 is a wasteful number, since it uses less digits than its factorization.

16869408509759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297646808456.

The product of its (nonzero) digits is 1175731200, while the sum is 77.

The spelling of 16869408509759 in words is "sixteen trillion, eight hundred sixty-nine billion, four hundred eight million, five hundred nine thousand, seven hundred fifty-nine".