1681879651423 has 2 divisors, whose sum is σ = 1681879651424. Its totient is φ = 1681879651422.

The previous prime is 1681879651409. The next prime is 1681879651429. The reversal of 1681879651423 is 3241569781861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1681879651423 - 2⁹ = 1681879650911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1681879651429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840939825711 + 840939825712.

It is an arithmetic number, because the mean of its divisors is an integer number (840939825712).

Almost surely, 2^{1681879651423} is an apocalyptic number.

1681879651423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681879651423 is an equidigital number, since it uses as much as digits as its factorization.

1681879651423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 61.

The spelling of 1681879651423 in words is "one trillion, six hundred eighty-one billion, eight hundred seventy-nine million, six hundred fifty-one thousand, four hundred twenty-three".