16666851952 has 60 divisors (see below), whose sum is σ = 34657868560. Its totient is φ = 7762157568.

The previous prime is 16666851947. The next prime is 16666851959. The reversal of 16666851952 is 25915866661.

It is a junction number, because it is equal to n+sod(n) for n = 16666851893 and 16666851902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666851959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429949 + ... + 467107.

Almost surely, 2^16666851952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16666851952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17328934280).

16666851952 is an abundant number, since it is smaller than the sum of its proper divisors (17991016608).

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

16666851952 is a wasteful number, since it uses less digits than its factorization.

16666851952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37298 (or 37275 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 55.

The spelling of 16666851952 in words is "sixteen billion, six hundred sixty-six million, eight hundred fifty-one thousand, nine hundred fifty-two".