16776533376 has 384 divisors, whose sum is σ = 52466319360. Its totient is φ = 5329981440.

The previous prime is 16776533363. The next prime is 16776533387. The reversal of 16776533376 is 67333567761.

16776533376 is a `hidden beast` number, since 1 + 6 + 7 + 76 + 533 + 37 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (10001880) is a multiple of the sum of its prime factors (324).

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 47 ways as a sum of consecutive naturals, for example, 122456380 + ... + 122456516.

It is an arithmetic number, because the mean of its divisors is an integer number (136631040).

Almost surely, 2^16776533376 is an apocalyptic number.

16776533376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16776533376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26233159680).

16776533376 is an abundant number, since it is smaller than the sum of its proper divisors (35689785984).

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

16776533376 is a wasteful number, since it uses less digits than its factorization.

16776533376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 300 counting only the distinct ones).

The product of its digits is 10001880, while the sum is 54.

The spelling of 16776533376 in words is "sixteen billion, seven hundred seventy-six million, five hundred thirty-three thousand, three hundred seventy-six".