16566481140 has 192 divisors, whose sum is σ = 53660759040. Its totient is φ = 3776578560.

The previous prime is 16566481117. The next prime is 16566481163. The reversal of 16566481140 is 4118466561.

It is an interprime number because it is at equal distance from previous prime (16566481117) and next prime (16566481163).

It is a junction number, because it is equal to n+sod(n) for n = 16566481092 and 16566481101.

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 63 ways as a sum of consecutive naturals, for example, 1713159 + ... + 1722801.

It is an arithmetic number, because the mean of its divisors is an integer number (279483120).

Almost surely, 2^16566481140 is an apocalyptic number.

16566481140 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 16566481140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26830379520).

16566481140 is an abundant number, since it is smaller than the sum of its proper divisors (37094277900).

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

16566481140 is a wasteful number, since it uses less digits than its factorization.

16566481140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9822 (or 9820 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 16566481140 in words is "sixteen billion, five hundred sixty-six million, four hundred eighty-one thousand, one hundred forty".