985702338457 has 2 divisors, whose sum is σ = 985702338458. Its totient is φ = 985702338456.

The previous prime is 985702338421. The next prime is 985702338529. The reversal of 985702338457 is 754833207589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612742962841 + 372959375616 = 782779^2 + 610704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985702338457 is a prime.

It is a super-2 number, since 2×985702338457² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 985702338395 and 985702338404.

It is not a weakly prime, because it can be changed into another prime (985702638457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492851169228 + 492851169229.

It is an arithmetic number, because the mean of its divisors is an integer number (492851169229).

Almost surely, 2^985702338457 is an apocalyptic number.

It is an amenable number.

985702338457 is a deficient number, since it is larger than the sum of its proper divisors (1).

985702338457 is an equidigital number, since it uses as much as digits as its factorization.

985702338457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50803200, while the sum is 61.

The spelling of 985702338457 in words is "nine hundred eighty-five billion, seven hundred two million, three hundred thirty-eight thousand, four hundred fifty-seven".