699016223509 has 2 divisors, whose sum is σ = 699016223510. Its totient is φ = 699016223508.

The previous prime is 699016223501. The next prime is 699016223573. The reversal of 699016223509 is 905322610996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 637274907025 + 61741316484 = 798295^2 + 248478^2 .

It is a cyclic number.

It is not a de Polignac number, because 699016223509 - 2³ = 699016223501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699016223501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349508111754 + 349508111755.

It is an arithmetic number, because the mean of its divisors is an integer number (349508111755).

Almost surely, 2^699016223509 is an apocalyptic number.

It is an amenable number.

699016223509 is a deficient number, since it is larger than the sum of its proper divisors (1).

699016223509 is an equidigital number, since it uses as much as digits as its factorization.

699016223509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The spelling of 699016223509 in words is "six hundred ninety-nine billion, sixteen million, two hundred twenty-three thousand, five hundred nine".