219144327493 has 24 divisors (see below), whose sum is σ = 271270334016. Its totient is φ = 173342707200.

The previous prime is 219144327461. The next prime is 219144327527. The reversal of 219144327493 is 394723441912.

It is not a de Polignac number, because 219144327493 - 2⁵ = 219144327461 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219144322493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4817013 + ... + 4862293.

It is an arithmetic number, because the mean of its divisors is an integer number (11302930584).

Almost surely, 2^219144327493 is an apocalyptic number.

It is an amenable number.

219144327493 is a deficient number, since it is larger than the sum of its proper divisors (52126006523).

219144327493 is a wasteful number, since it uses less digits than its factorization.

219144327493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49405 (or 49392 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The spelling of 219144327493 in words is "two hundred nineteen billion, one hundred forty-four million, three hundred twenty-seven thousand, four hundred ninety-three".