16851870037 has 2 divisors, whose sum is σ = 16851870038. Its totient is φ = 16851870036.

The previous prime is 16851870029. The next prime is 16851870071. The reversal of 16851870037 is 73007815861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14574767076 + 2277102961 = 120726^2 + 47719^2 .

It is a cyclic number.

It is not a de Polignac number, because 16851870037 - 2³ = 16851870029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16851870017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8425935018 + 8425935019.

It is an arithmetic number, because the mean of its divisors is an integer number (8425935019).

Almost surely, 2^16851870037 is an apocalyptic number.

It is an amenable number.

16851870037 is a deficient number, since it is larger than the sum of its proper divisors (1).

16851870037 is an equidigital number, since it uses as much as digits as its factorization.

16851870037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 16851870037 in words is "sixteen billion, eight hundred fifty-one million, eight hundred seventy thousand, thirty-seven".