1723520633873 has 2 divisors, whose sum is σ = 1723520633874. Its totient is φ = 1723520633872.

The previous prime is 1723520633771. The next prime is 1723520633911. The reversal of 1723520633873 is 3783360253271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1566722849344 + 156797784529 = 1251688^2 + 395977^2 .

It is a cyclic number.

It is not a de Polignac number, because 1723520633873 - 2¹² = 1723520629777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1723520633173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861760316936 + 861760316937.

It is an arithmetic number, because the mean of its divisors is an integer number (861760316937).

Almost surely, 2^{1723520633873} is an apocalyptic number.

It is an amenable number.

1723520633873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1723520633873 is an equidigital number, since it uses as much as digits as its factorization.

1723520633873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 1723520633873 in words is "one trillion, seven hundred twenty-three billion, five hundred twenty million, six hundred thirty-three thousand, eight hundred seventy-three".