16391461783320 has 768 divisors, whose sum is σ = 62280171233280. Its totient is φ = 3849605222400.

The previous prime is 16391461783283. The next prime is 16391461783349. The reversal of 16391461783320 is 2338716419361.

16391461783320 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 14 + 617 + 8 + 3 + 3 + 2 + 0 = 666.

16391461783320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 278088892 + ... + 278147828.

It is an arithmetic number, because the mean of its divisors is an integer number (81093972960).

Almost surely, 2^{16391461783320} is an apocalyptic number.

16391461783320 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 16391461783320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31140085616640).

16391461783320 is an abundant number, since it is smaller than the sum of its proper divisors (45888709449960).

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

16391461783320 is a wasteful number, since it uses less digits than its factorization.

16391461783320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59078 (or 59062 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 16391461783320 in words is "sixteen trillion, three hundred ninety-one billion, four hundred sixty-one million, seven hundred eighty-three thousand, three hundred twenty".