719399344217 has 4 divisors (see below), whose sum is σ = 719485230516. Its totient is φ = 719313457920.

The previous prime is 719399344207. The next prime is 719399344219. The reversal of 719399344217 is 712443993917.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 469703251801 + 249696092416 = 685349^2 + 499696^2 .

It is a cyclic number.

It is not a de Polignac number, because 719399344217 - 2⁸ = 719399343961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (719399344219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42930584 + ... + 42947337.

It is an arithmetic number, because the mean of its divisors is an integer number (179871307629).

Almost surely, 2^719399344217 is an apocalyptic number.

It is an amenable number.

719399344217 is a deficient number, since it is larger than the sum of its proper divisors (85886299).

719399344217 is an equidigital number, since it uses as much as digits as its factorization.

719399344217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85886298.

The product of its digits is 10287648, while the sum is 59.

The spelling of 719399344217 in words is "seven hundred nineteen billion, three hundred ninety-nine million, three hundred forty-four thousand, two hundred seventeen".