16181643496 has 32 divisors (see below), whose sum is σ = 30897583200. Its totient is φ = 7942668480.

The previous prime is 16181643461. The next prime is 16181643539. The reversal of 16181643496 is 69434618161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322591 + ... + 369361.

It is an arithmetic number, because the mean of its divisors is an integer number (965549475).

Almost surely, 2^16181643496 is an apocalyptic number.

It is an amenable number.

16181643496 is a deficient number, since it is larger than the sum of its proper divisors (14715939704).

16181643496 is a wasteful number, since it uses less digits than its factorization.

16181643496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47569 (or 47565 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The spelling of 16181643496 in words is "sixteen billion, one hundred eighty-one million, six hundred forty-three thousand, four hundred ninety-six".