100000247797 has 2 divisors, whose sum is σ = 100000247798. Its totient is φ = 100000247796.

The previous prime is 100000247779. The next prime is 100000247819. The reversal of 100000247797 is 797742000001.

Together with previous prime (100000247779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96770144241 + 3230103556 = 311079^2 + 56834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100000247797 is a prime.

It is a super-2 number, since 2×100000247797² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100000248797) 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, 50000123898 + 50000123899.

It is an arithmetic number, because the mean of its divisors is an integer number (50000123899).

Almost surely, 2^100000247797 is an apocalyptic number.

It is an amenable number.

100000247797 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000247797 is an equidigital number, since it uses as much as digits as its factorization.

100000247797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

Adding to 100000247797 its reverse (797742000001), we get a palindrome (897742247798).

The spelling of 100000247797 in words is "one hundred billion, two hundred forty-seven thousand, seven hundred ninety-seven".