16402774429440 has 1296 divisors, whose sum is σ = 68435261294400. Its totient is φ = 3612440788992.

The previous prime is 16402774429351. The next prime is 16402774429453. The reversal of 16402774429440 is 4492447720461.

16402774429440 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 2 + 77 + 442 + 94 + 40 = 666.

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 143 ways as a sum of consecutive naturals, for example, 12588467829 + ... + 12588469131.

Almost surely, 2^{16402774429440} is an apocalyptic number.

16402774429440 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 16402774429440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34217630647200).

16402774429440 is an abundant number, since it is smaller than the sum of its proper divisors (52032486864960).

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

16402774429440 is a wasteful number, since it uses less digits than its factorization.

16402774429440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 54.

The spelling of 16402774429440 in words is "sixteen trillion, four hundred two billion, seven hundred seventy-four million, four hundred twenty-nine thousand, four hundred forty".