16326695550 has 48 divisors (see below), whose sum is σ = 44171137152. Its totient is φ = 3957986400.

The previous prime is 16326695549. The next prime is 16326695621. The reversal of 16326695550 is 5559662361.

It is a self number, because there is not a number n which added to its sum of digits gives 16326695550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4945834 + ... + 4949133.

It is an arithmetic number, because the mean of its divisors is an integer number (920232024).

Almost surely, 2^16326695550 is an apocalyptic number.

16326695550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16326695550 is an abundant number, since it is smaller than the sum of its proper divisors (27844441602).

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

16326695550 is a wasteful number, since it uses less digits than its factorization.

16326695550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9894993 (or 9894988 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 48.

The spelling of 16326695550 in words is "sixteen billion, three hundred twenty-six million, six hundred ninety-five thousand, five hundred fifty".