1664103120047 has 2 divisors, whose sum is σ = 1664103120048. Its totient is φ = 1664103120046.

The previous prime is 1664103119989. The next prime is 1664103120073. The reversal of 1664103120047 is 7400213014661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1664103120047 - 2⁶ = 1664103119983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1664103119989 and 1664103120016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1664103120077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832051560023 + 832051560024.

It is an arithmetic number, because the mean of its divisors is an integer number (832051560024).

Almost surely, 2^{1664103120047} is an apocalyptic number.

1664103120047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664103120047 is an equidigital number, since it uses as much as digits as its factorization.

1664103120047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 1664103120047 in words is "one trillion, six hundred sixty-four billion, one hundred three million, one hundred twenty thousand, forty-seven".