80100109 has 4 divisors (see below), whose sum is σ = 80121600. Its totient is φ = 80078620.

The previous prime is 80100091. The next prime is 80100127. The reversal of 80100109 is 90100108.

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.

It is an interprime number because it is at equal distance from previous prime (80100091) and next prime (80100127).

It is a cyclic number.

It is not a de Polignac number, because 80100109 - 2¹¹ = 80098061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80100179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3547 + ... + 13144.

It is an arithmetic number, because the mean of its divisors is an integer number (20030400).

Almost surely, 2^80100109 is an apocalyptic number.

It is an amenable number.

80100109 is a deficient number, since it is larger than the sum of its proper divisors (21491).

80100109 is a wasteful number, since it uses less digits than its factorization.

80100109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21490.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 80100109 is about 8949.8664235842. The cubic root of 80100109 is about 431.0665950072.

Subtracting 80100109 from its reverse (90100108), we obtain a palindrome (9999999).

The spelling of 80100109 in words is "eighty million, one hundred thousand, one hundred nine".