219979740441 has 4 divisors (see below), whose sum is σ = 293306320592. Its totient is φ = 146653160292.

The previous prime is 219979740437. The next prime is 219979740493. The reversal of 219979740441 is 144047979912.

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 not a de Polignac number, because 219979740441 - 2² = 219979740437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219979740041) 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, 36663290071 + ... + 36663290076.

It is an arithmetic number, because the mean of its divisors is an integer number (73326580148).

Almost surely, 2^219979740441 is an apocalyptic number.

It is an amenable number.

219979740441 is a deficient number, since it is larger than the sum of its proper divisors (73326580151).

219979740441 is an equidigital number, since it uses as much as digits as its factorization.

219979740441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73326580150.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 219979740441 in words is "two hundred nineteen billion, nine hundred seventy-nine million, seven hundred forty thousand, four hundred forty-one".