16851945052 has 12 divisors (see below), whose sum is σ = 29491878136. Its totient is φ = 8425694160.

The previous prime is 16851945043. The next prime is 16851945133. The reversal of 16851945052 is 25054915861.

It is a junction number, because it is equal to n+sod(n) for n = 16851944993 and 16851945011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130618 + ... + 225310.

Almost surely, 2^16851945052 is an apocalyptic number.

It is an amenable number.

16851945052 is a deficient number, since it is larger than the sum of its proper divisors (12639933084).

16851945052 is a wasteful number, since it uses less digits than its factorization.

16851945052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139188 (or 139186 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 46.

The spelling of 16851945052 in words is "sixteen billion, eight hundred fifty-one million, nine hundred forty-five thousand, fifty-two".