16326428920 has 16 divisors (see below), whose sum is σ = 36734465160. Its totient is φ = 6530571552.

The previous prime is 16326428917. The next prime is 16326428947. The reversal of 16326428920 is 2982462361.

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, 204080322 + ... + 204080401.

Almost surely, 2^16326428920 is an apocalyptic number.

16326428920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16326428920 is an abundant number, since it is smaller than the sum of its proper divisors (20408036240).

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

16326428920 is a wasteful number, since it uses less digits than its factorization.

16326428920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408160734 (or 408160730 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 16326428920 in words is "sixteen billion, three hundred twenty-six million, four hundred twenty-eight thousand, nine hundred twenty".