219549245340 has 96 divisors (see below), whose sum is σ = 620648804160. Its totient is φ = 57983993856.

The previous prime is 219549245089. The next prime is 219549245353. The reversal of 219549245340 is 43542945912.

219549245340 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×219549245340² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 219549245340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18548064 + ... + 18559896.

It is an arithmetic number, because the mean of its divisors is an integer number (6465091710).

Almost surely, 2^219549245340 is an apocalyptic number.

219549245340 is a gapful number since it is divisible by the number (20) 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 219549245340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310324402080).

219549245340 is an abundant number, since it is smaller than the sum of its proper divisors (401099558820).

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

219549245340 is a wasteful number, since it uses less digits than its factorization.

219549245340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14791 (or 14789 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 219549245340 in words is "two hundred nineteen billion, five hundred forty-nine million, two hundred forty-five thousand, three hundred forty".