1715123494681 has 2 divisors, whose sum is σ = 1715123494682. Its totient is φ = 1715123494680.

The previous prime is 1715123494607. The next prime is 1715123494699. The reversal of 1715123494681 is 1864943215171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1694204211456 + 20919283225 = 1301616^2 + 144635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1715123494681 - 2¹⁵ = 1715123461913 is a prime.

It is a super-2 number, since 2×1715123494681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1715123494781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 857561747340 + 857561747341.

It is an arithmetic number, because the mean of its divisors is an integer number (857561747341).

Almost surely, 2^{1715123494681} is an apocalyptic number.

It is an amenable number.

1715123494681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1715123494681 is an equidigital number, since it uses as much as digits as its factorization.

1715123494681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The spelling of 1715123494681 in words is "one trillion, seven hundred fifteen billion, one hundred twenty-three million, four hundred ninety-four thousand, six hundred eighty-one".