219230111550 has 96 divisors (see below), whose sum is σ = 566250614784. Its totient is φ = 56080080000.

The previous prime is 219230111501. The next prime is 219230111561. The reversal of 219230111550 is 55111032912.

219230111550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×219230111550³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115875 + ... + 672225.

It is an arithmetic number, because the mean of its divisors is an integer number (5898443904).

Almost surely, 2^219230111550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219230111550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283125307392).

219230111550 is an abundant number, since it is smaller than the sum of its proper divisors (347020503234).

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

219230111550 is a wasteful number, since it uses less digits than its factorization.

219230111550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556474 (or 556469 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 30.

The spelling of 219230111550 in words is "two hundred nineteen billion, two hundred thirty million, one hundred eleven thousand, five hundred fifty".