20678168743 has 2 divisors, whose sum is σ = 20678168744. Its totient is φ = 20678168742.

The previous prime is 20678168737. The next prime is 20678168747. The reversal of 20678168743 is 34786187602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20678168743 - 2²⁹ = 20141297831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20678168747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10339084371 + 10339084372.

It is an arithmetic number, because the mean of its divisors is an integer number (10339084372).

Almost surely, 2^20678168743 is an apocalyptic number.

20678168743 is a deficient number, since it is larger than the sum of its proper divisors (1).

20678168743 is an equidigital number, since it uses as much as digits as its factorization.

20678168743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 20678168743 in words is "twenty billion, six hundred seventy-eight million, one hundred sixty-eight thousand, seven hundred forty-three".