16550404416 has 168 divisors, whose sum is σ = 58386333824. Its totient is φ = 4364928000.

The previous prime is 16550404397. The next prime is 16550404421. The reversal of 16550404416 is 61440405561.

16550404416 is a `hidden beast` number, since 16 + 550 + 40 + 44 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 105460 + ... + 210291.

Almost surely, 2^16550404416 is an apocalyptic number.

16550404416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16550404416 is an abundant number, since it is smaller than the sum of its proper divisors (41835929408).

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

16550404416 is a wasteful number, since it uses less digits than its factorization.

16550404416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315789 (or 315776 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 16550404416 its reverse (61440405561), we get a palindrome (77990809977).

The spelling of 16550404416 in words is "sixteen billion, five hundred fifty million, four hundred four thousand, four hundred sixteen".