70061357309 has 2 divisors, whose sum is σ = 70061357310. Its totient is φ = 70061357308.

The previous prime is 70061357297. The next prime is 70061357323. The reversal of 70061357309 is 90375316007.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38633868025 + 31427489284 = 196555^2 + 177278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70061357309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70061357329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35030678654 + 35030678655.

It is an arithmetic number, because the mean of its divisors is an integer number (35030678655).

Almost surely, 2^70061357309 is an apocalyptic number.

It is an amenable number.

70061357309 is a deficient number, since it is larger than the sum of its proper divisors (1).

70061357309 is an equidigital number, since it uses as much as digits as its factorization.

70061357309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 41.

The spelling of 70061357309 in words is "seventy billion, sixty-one million, three hundred fifty-seven thousand, three hundred nine".