16454640512 has 32 divisors (see below), whose sum is σ = 32841460200. Its totient is φ = 8212078080.

The previous prime is 16454640491. The next prime is 16454640539. The reversal of 16454640512 is 21504645461.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

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, 49562 + ... + 188057.

Almost surely, 2^16454640512 is an apocalyptic number.

It is an amenable number.

16454640512 is a deficient number, since it is larger than the sum of its proper divisors (16386819688).

16454640512 is an equidigital number, since it uses as much as digits as its factorization.

16454640512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238174 (or 238162 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 16454640512 in words is "sixteen billion, four hundred fifty-four million, six hundred forty thousand, five hundred twelve".