719880670021 has 2 divisors, whose sum is σ = 719880670022. Its totient is φ = 719880670020.

The previous prime is 719880670013. The next prime is 719880670081. The reversal of 719880670021 is 120076088917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622607793025 + 97272876996 = 789055^2 + 311886^2 .

It is a cyclic number.

It is not a de Polignac number, because 719880670021 - 2³ = 719880670013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (719880670001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359940335010 + 359940335011.

It is an arithmetic number, because the mean of its divisors is an integer number (359940335011).

Almost surely, 2^719880670021 is an apocalyptic number.

It is an amenable number.

719880670021 is a deficient number, since it is larger than the sum of its proper divisors (1).

719880670021 is an equidigital number, since it uses as much as digits as its factorization.

719880670021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 49.

The spelling of 719880670021 in words is "seven hundred nineteen billion, eight hundred eighty million, six hundred seventy thousand, twenty-one".