16853121774 has 48 divisors (see below), whose sum is σ = 36697319568. Its totient is φ = 5589741696.

The previous prime is 16853121763. The next prime is 16853121781. The reversal of 16853121774 is 47712135861.

16853121774 is a `hidden beast` number, since 168 + 5 + 312 + 177 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3518209 + ... + 3522995.

It is an arithmetic number, because the mean of its divisors is an integer number (764527491).

Almost surely, 2^16853121774 is an apocalyptic number.

16853121774 is an abundant number, since it is smaller than the sum of its proper divisors (19844197794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16853121774 is a wasteful number, since it uses less digits than its factorization.

16853121774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5729 (or 5726 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The spelling of 16853121774 in words is "sixteen billion, eight hundred fifty-three million, one hundred twenty-one thousand, seven hundred seventy-four".