100280810873 has 4 divisors (see below), whose sum is σ = 100281444240. Its totient is φ = 100280177508.

The previous prime is 100280810869. The next prime is 100280810881. The reversal of 100280810873 is 378018082001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 100280810873 - 2² = 100280810869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100280810573) 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 in 3 ways as a sum of consecutive naturals, for example, 154286 + ... + 473672.

It is an arithmetic number, because the mean of its divisors is an integer number (25070361060).

Almost surely, 2^100280810873 is an apocalyptic number.

It is an amenable number.

100280810873 is a deficient number, since it is larger than the sum of its proper divisors (633367).

100280810873 is an equidigital number, since it uses as much as digits as its factorization.

100280810873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633366.

The product of its (nonzero) digits is 21504, while the sum is 38.

Adding to 100280810873 its reverse (378018082001), we get a palindrome (478298892874).

The spelling of 100280810873 in words is "one hundred billion, two hundred eighty million, eight hundred ten thousand, eight hundred seventy-three".