16779326494400 has 168 divisors, whose sum is σ = 41498331932304. Its totient is φ = 6677525708800.

The previous prime is 16779326494373. The next prime is 16779326494423. The reversal of 16779326494400 is 449462397761.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 478284860 + ... + 478319940.

Almost surely, 2^{16779326494400} is an apocalyptic number.

16779326494400 is a gapful number since it is divisible by the number (10) 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 16779326494400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20749165966152).

16779326494400 is an abundant number, since it is smaller than the sum of its proper divisors (24719005437904).

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

16779326494400 is a wasteful number, since it uses less digits than its factorization.

16779326494400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36619 (or 36604 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 62.

The spelling of 16779326494400 in words is "sixteen trillion, seven hundred seventy-nine billion, three hundred twenty-six million, four hundred ninety-four thousand, four hundred".