16409164370400 has 432 divisors, whose sum is σ = 58116352065408. Its totient is φ = 4356637824000.

The previous prime is 16409164370369. The next prime is 16409164370441. The reversal of 16409164370400 is 407346190461.

16409164370400 is a `hidden beast` number, since 16 + 4 + 0 + 9 + 164 + 3 + 70 + 400 = 666.

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

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 2174259427 + ... + 2174266973.

It is an arithmetic number, because the mean of its divisors is an integer number (134528592744).

Almost surely, 2^{16409164370400} is an apocalyptic number.

16409164370400 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 16409164370400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29058176032704).

16409164370400 is an abundant number, since it is smaller than the sum of its proper divisors (41707187695008).

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

16409164370400 is a wasteful number, since it uses less digits than its factorization.

16409164370400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8855 (or 8839 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 16409164370400 in words is "sixteen trillion, four hundred nine billion, one hundred sixty-four million, three hundred seventy thousand, four hundred".