100280810869 has 2 divisors, whose sum is σ = 100280810870. Its totient is φ = 100280810868.

The previous prime is 100280810867. The next prime is 100280810881. The reversal of 100280810869 is 968018082001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96382307025 + 3898503844 = 310455^2 + 62438^2 .

It is a cyclic number.

It is not a de Polignac number, because 100280810869 - 2¹ = 100280810867 is a prime.

It is a super-2 number, since 2×100280810869² (a number of 23 digits) contains 22 as substring.

Together with 100280810867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100280810867) 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, 50140405434 + 50140405435.

It is an arithmetic number, because the mean of its divisors is an integer number (50140405435).

Almost surely, 2^100280810869 is an apocalyptic number.

It is an amenable number.

100280810869 is a deficient number, since it is larger than the sum of its proper divisors (1).

100280810869 is an equidigital number, since it uses as much as digits as its factorization.

100280810869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 43.

The spelling of 100280810869 in words is "one hundred billion, two hundred eighty million, eight hundred ten thousand, eight hundred sixty-nine".