719966627521 has 2 divisors, whose sum is σ = 719966627522. Its totient is φ = 719966627520.

The previous prime is 719966627483. The next prime is 719966627591. The reversal of 719966627521 is 125726669917.

719966627521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507422576896 + 212544050625 = 712336^2 + 461025^2 .

It is a cyclic number.

It is not a de Polignac number, because 719966627521 - 2¹⁷ = 719966496449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 719966627521.

It is not a weakly prime, because it can be changed into another prime (719966627591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359983313760 + 359983313761.

It is an arithmetic number, because the mean of its divisors is an integer number (359983313761).

Almost surely, 2^719966627521 is an apocalyptic number.

It is an amenable number.

719966627521 is a deficient number, since it is larger than the sum of its proper divisors (1).

719966627521 is an equidigital number, since it uses as much as digits as its factorization.

719966627521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 61.

The spelling of 719966627521 in words is "seven hundred nineteen billion, nine hundred sixty-six million, six hundred twenty-seven thousand, five hundred twenty-one".