70064909309 has 2 divisors, whose sum is σ = 70064909310. Its totient is φ = 70064909308.

The previous prime is 70064909287. The next prime is 70064909357. The reversal of 70064909309 is 90390946007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44609664100 + 25455245209 = 211210^2 + 159547^2 .

It is a cyclic number.

It is not a de Polignac number, because 70064909309 - 2²⁰ = 70063860733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70064909809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35032454654 + 35032454655.

It is an arithmetic number, because the mean of its divisors is an integer number (35032454655).

Almost surely, 2^70064909309 is an apocalyptic number.

It is an amenable number.

70064909309 is a deficient number, since it is larger than the sum of its proper divisors (1).

70064909309 is an equidigital number, since it uses as much as digits as its factorization.

70064909309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The spelling of 70064909309 in words is "seventy billion, sixty-four million, nine hundred nine thousand, three hundred nine".