219544342049 has 4 divisors (see below), whose sum is σ = 231099307440. Its totient is φ = 207989376660.

The previous prime is 219544342027. The next prime is 219544342051. The reversal of 219544342049 is 940243445912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 219544342049 - 2²⁴ = 219527564833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219544341994 and 219544342012.

It is not an unprimeable number, because it can be changed into a prime (219544347049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5777482667 + ... + 5777482704.

It is an arithmetic number, because the mean of its divisors is an integer number (57774826860).

Almost surely, 2^219544342049 is an apocalyptic number.

It is an amenable number.

219544342049 is a deficient number, since it is larger than the sum of its proper divisors (11554965391).

219544342049 is a wasteful number, since it uses less digits than its factorization.

219544342049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11554965390.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 219544342049 in words is "two hundred nineteen billion, five hundred forty-four million, three hundred forty-two thousand, forty-nine".