16386240526240 has 192 divisors, whose sum is σ = 41916583979424. Its totient is φ = 6017497694208.

The previous prime is 16386240526237. The next prime is 16386240526393. The reversal of 16386240526240 is 4262504268361.

It can be written as a sum of positive squares in 16 ways, for example, as 2342724115216 + 14043516411024 = 1530596^2 + 3747468^2 .

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 31 ways as a sum of consecutive naturals, for example, 1662391392 + ... + 1662401248.

Almost surely, 2^{16386240526240} is an apocalyptic number.

16386240526240 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 16386240526240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20958291989712).

16386240526240 is an abundant number, since it is smaller than the sum of its proper divisors (25530343453184).

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

16386240526240 is a wasteful number, since it uses less digits than its factorization.

16386240526240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14139 (or 14131 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 16386240526240 in words is "sixteen trillion, three hundred eighty-six billion, two hundred forty million, five hundred twenty-six thousand, two hundred forty".