16275440220 has 144 divisors (see below), whose sum is σ = 49459963392. Its totient is φ = 3997044480.

The previous prime is 16275440201. The next prime is 16275440257. The reversal of 16275440220 is 2204457261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5098825 + ... + 5102015.

It is an arithmetic number, because the mean of its divisors is an integer number (343471968).

Almost surely, 2^16275440220 is an apocalyptic number.

16275440220 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 16275440220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24729981696).

16275440220 is an abundant number, since it is smaller than the sum of its proper divisors (33184523172).

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

16275440220 is a wasteful number, since it uses less digits than its factorization.

16275440220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732 (or 3717 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

Adding to 16275440220 its reverse (2204457261), we get a palindrome (18479897481).

The spelling of 16275440220 in words is "sixteen billion, two hundred seventy-five million, four hundred forty thousand, two hundred twenty".