16649953416 has 192 divisors, whose sum is σ = 47446963200. Its totient is φ = 5270054400.

The previous prime is 16649953393. The next prime is 16649953423. The reversal of 16649953416 is 61435994661.

It is a happy number.

16649953416 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 99 + 534 + 16 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16306986 + ... + 16308006.

It is an arithmetic number, because the mean of its divisors is an integer number (247119600).

Almost surely, 2^16649953416 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 16649953416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23723481600).

16649953416 is an abundant number, since it is smaller than the sum of its proper divisors (30797009784).

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

16649953416 is a wasteful number, since it uses less digits than its factorization.

16649953416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1213 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 16649953416 in words is "sixteen billion, six hundred forty-nine million, nine hundred fifty-three thousand, four hundred sixteen".