16454555550 has 72 divisors (see below), whose sum is σ = 44376315984. Its totient is φ = 4371166080.

The previous prime is 16454555549. The next prime is 16454555573. The reversal of 16454555550 is 5555545461.

It is a happy number.

16454555550 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 45 + 55 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 16454555496 and 16454555505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48834 + ... + 187866.

It is an arithmetic number, because the mean of its divisors is an integer number (616337722).

Almost surely, 2^16454555550 is an apocalyptic number.

16454555550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16454555550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22188157992).

16454555550 is an abundant number, since it is smaller than the sum of its proper divisors (27921760434).

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

16454555550 is a wasteful number, since it uses less digits than its factorization.

16454555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139314 (or 139306 counting only the distinct ones).

The product of its (nonzero) digits is 1500000, while the sum is 45.

The spelling of 16454555550 in words is "sixteen billion, four hundred fifty-four million, five hundred fifty-five thousand, five hundred fifty".