16758517600849 has 4 divisors (see below), whose sum is σ = 16758774978660. Its totient is φ = 16758260223040.

The previous prime is 16758517600817. The next prime is 16758517600873. The reversal of 16758517600849 is 94800671585761.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1049819504449 + 15708698096400 = 1024607^2 + 3963420^2 .

It is a cyclic number.

It is not a de Polignac number, because 16758517600849 - 2⁵ = 16758517600817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16758517630849) 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, 128591212 + ... + 128721469.

It is an arithmetic number, because the mean of its divisors is an integer number (4189693744665).

Almost surely, 2^{16758517600849} is an apocalyptic number.

It is an amenable number.

16758517600849 is a deficient number, since it is larger than the sum of its proper divisors (257377811).

16758517600849 is an equidigital number, since it uses as much as digits as its factorization.

16758517600849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257377810.

The product of its (nonzero) digits is 101606400, while the sum is 67.

The spelling of 16758517600849 in words is "sixteen trillion, seven hundred fifty-eight billion, five hundred seventeen million, six hundred thousand, eight hundred forty-nine".