70021440317 has 2 divisors, whose sum is σ = 70021440318. Its totient is φ = 70021440316.

The previous prime is 70021440311. The next prime is 70021440319. The reversal of 70021440317 is 71304412007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47422030756 + 22599409561 = 217766^2 + 150331^2 .

It is a cyclic number.

It is not a de Polignac number, because 70021440317 - 2⁶ = 70021440253 is a prime.

Together with 70021440319, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70021440317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70021440311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35010720158 + 35010720159.

It is an arithmetic number, because the mean of its divisors is an integer number (35010720159).

Almost surely, 2^70021440317 is an apocalyptic number.

It is an amenable number.

70021440317 is a deficient number, since it is larger than the sum of its proper divisors (1).

70021440317 is an equidigital number, since it uses as much as digits as its factorization.

70021440317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The spelling of 70021440317 in words is "seventy billion, twenty-one million, four hundred forty thousand, three hundred seventeen".