16836480019985 has 8 divisors (see below), whose sum is σ = 20205268590696. Its totient is φ = 13468188971520.

The previous prime is 16836480019969. The next prime is 16836480020029. The reversal of 16836480019985 is 58991008463861.

It is a happy number.

It is a Cunningham number, because it is equal to 4103228²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 6061128868096 + 10775351151889 = 2461936^2 + 3282583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16836480019985 - 2⁴ = 16836480019969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124306106 + ... + 124441475.

It is an arithmetic number, because the mean of its divisors is an integer number (2525658573837).

Almost surely, 2^{16836480019985} is an apocalyptic number.

It is an amenable number.

16836480019985 is a deficient number, since it is larger than the sum of its proper divisors (3368788570711).

16836480019985 is a wasteful number, since it uses less digits than its factorization.

16836480019985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248761123.

The product of its (nonzero) digits is 89579520, while the sum is 68.

The spelling of 16836480019985 in words is "sixteen trillion, eight hundred thirty-six billion, four hundred eighty million, nineteen thousand, nine hundred eighty-five".