16243808480640 has 1536 divisors, whose sum is σ = 66648467088000. Its totient is φ = 3762053185536.

The previous prime is 16243808480639. The next prime is 16243808480663. The reversal of 16243808480640 is 4608480834261.

It is a happy number.

16243808480640 is a `hidden beast` number, since 1 + 6 + 2 + 43 + 80 + 8 + 480 + 6 + 40 = 666.

It is a super-2 number, since 2×16243808480640² (a number of 27 digits) contains 22 as substring.

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, 5258596216 + ... + 5258599304.

Almost surely, 2^{16243808480640} is an apocalyptic number.

16243808480640 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 16243808480640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33324233544000).

16243808480640 is an abundant number, since it is smaller than the sum of its proper divisors (50404658607360).

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

16243808480640 is an equidigital number, since it uses as much as digits as its factorization.

16243808480640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176 (or 3129 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 54.

The spelling of 16243808480640 in words is "sixteen trillion, two hundred forty-three billion, eight hundred eight million, four hundred eighty thousand, six hundred forty".