16970918694913 has 2 divisors, whose sum is σ = 16970918694914. Its totient is φ = 16970918694912.

The previous prime is 16970918694907. The next prime is 16970918694923. The reversal of 16970918694913 is 31949681907961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14316779197504 + 2654139497409 = 3783752^2 + 1629153^2 .

It is an emirp because it is prime and its reverse (31949681907961) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16970918694913 is a prime.

It is not a weakly prime, because it can be changed into another prime (16970918694923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8485459347456 + 8485459347457.

It is an arithmetic number, because the mean of its divisors is an integer number (8485459347457).

Almost surely, 2^{16970918694913} is an apocalyptic number.

It is an amenable number.

16970918694913 is a deficient number, since it is larger than the sum of its proper divisors (1).

16970918694913 is an equidigital number, since it uses as much as digits as its factorization.

16970918694913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158723712, while the sum is 73.

The spelling of 16970918694913 in words is "sixteen trillion, nine hundred seventy billion, nine hundred eighteen million, six hundred ninety-four thousand, nine hundred thirteen".