719121000691 has 2 divisors, whose sum is σ = 719121000692. Its totient is φ = 719121000690.

The previous prime is 719121000679. The next prime is 719121000713. The reversal of 719121000691 is 196000121917.

It is a weak prime.

It is an emirp because it is prime and its reverse (196000121917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 719121000691 - 2⁵ = 719121000659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 719121000691.

It is not a weakly prime, because it can be changed into another prime (719121001691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359560500345 + 359560500346.

It is an arithmetic number, because the mean of its divisors is an integer number (359560500346).

Almost surely, 2^719121000691 is an apocalyptic number.

719121000691 is a deficient number, since it is larger than the sum of its proper divisors (1).

719121000691 is an equidigital number, since it uses as much as digits as its factorization.

719121000691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 37.

The spelling of 719121000691 in words is "seven hundred nineteen billion, one hundred twenty-one million, six hundred ninety-one", and thus it is an aban number.