19678017041 has 2 divisors, whose sum is σ = 19678017042. Its totient is φ = 19678017040.

The previous prime is 19678017013. The next prime is 19678017113. The reversal of 19678017041 is 14071087691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11767693441 + 7910323600 = 108479^2 + 88940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19678017041 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19678016983 and 19678017001.

It is not a weakly prime, because it can be changed into another prime (19678017001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9839008520 + 9839008521.

It is an arithmetic number, because the mean of its divisors is an integer number (9839008521).

Almost surely, 2^19678017041 is an apocalyptic number.

It is an amenable number.

19678017041 is a deficient number, since it is larger than the sum of its proper divisors (1).

19678017041 is an equidigital number, since it uses as much as digits as its factorization.

19678017041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 44.

The spelling of 19678017041 in words is "nineteen billion, six hundred seventy-eight million, seventeen thousand, forty-one".