1000009978313 has 2 divisors, whose sum is σ = 1000009978314. Its totient is φ = 1000009978312.

The previous prime is 1000009978309. The next prime is 1000009978343. The reversal of 1000009978313 is 3138799000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658155767824 + 341854210489 = 811268^2 + 584683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000009978313 - 2² = 1000009978309 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000009978343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500004989156 + 500004989157.

It is an arithmetic number, because the mean of its divisors is an integer number (500004989157).

Almost surely, 2^{1000009978313} is an apocalyptic number.

It is an amenable number.

1000009978313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000009978313 is an equidigital number, since it uses as much as digits as its factorization.

1000009978313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 1000009978313 in words is "one trillion, nine million, nine hundred seventy-eight thousand, three hundred thirteen".