16545386240 has 144 divisors (see below), whose sum is σ = 41675770080. Its totient is φ = 6284328960.

The previous prime is 16545386227. The next prime is 16545386243. The reversal of 16545386240 is 4268354561.

It is a junction number, because it is equal to n+sod(n) for n = 16545386191 and 16545386200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545386243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2260667 + ... + 2267973.

It is an arithmetic number, because the mean of its divisors is an integer number (289415070).

Almost surely, 2^16545386240 is an apocalyptic number.

16545386240 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 16545386240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20837885040).

16545386240 is an abundant number, since it is smaller than the sum of its proper divisors (25130383840).

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

16545386240 is an equidigital number, since it uses as much as digits as its factorization.

16545386240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418 (or 7404 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 16545386240 in words is "sixteen billion, five hundred forty-five million, three hundred eighty-six thousand, two hundred forty".