16326400668 has 12 divisors (see below), whose sum is σ = 38094934920. Its totient is φ = 5442133552.

The previous prime is 16326400667. The next prime is 16326400681. The reversal of 16326400668 is 86600462361.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16326400663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680266683 + ... + 680266706.

It is an arithmetic number, because the mean of its divisors is an integer number (3174577910).

Almost surely, 2^16326400668 is an apocalyptic number.

It is an amenable number.

16326400668 is an abundant number, since it is smaller than the sum of its proper divisors (21768534252).

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

16326400668 is a wasteful number, since it uses less digits than its factorization.

16326400668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360533396 (or 1360533394 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 16326400668 in words is "sixteen billion, three hundred twenty-six million, four hundred thousand, six hundred sixty-eight".