1723310137889 has 2 divisors, whose sum is σ = 1723310137890. Its totient is φ = 1723310137888.

The previous prime is 1723310137867. The next prime is 1723310137919. The reversal of 1723310137889 is 9887310133271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1637939232400 + 85370905489 = 1279820^2 + 292183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1723310137889 - 2¹² = 1723310133793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1723310137889.

It is not a weakly prime, because it can be changed into another prime (1723310130889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861655068944 + 861655068945.

It is an arithmetic number, because the mean of its divisors is an integer number (861655068945).

Almost surely, 2^{1723310137889} is an apocalyptic number.

It is an amenable number.

1723310137889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1723310137889 is an equidigital number, since it uses as much as digits as its factorization.

1723310137889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 1723310137889 in words is "one trillion, seven hundred twenty-three billion, three hundred ten million, one hundred thirty-seven thousand, eight hundred eighty-nine".