80100100 has 18 divisors (see below), whose sum is σ = 173817434. Its totient is φ = 32040000.

The previous prime is 80100091. The next prime is 80100127. The reversal of 80100100 is 100108.

It can be written as a sum of positive squares in 3 ways, for example, as 248004 + 79852096 = 498^2 + 8936^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400401 + ... + 400600.

Almost surely, 2^80100100 is an apocalyptic number.

It is an amenable number.

80100100 is an abundant number, since it is smaller than the sum of its proper divisors (93717334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80100100 is a wasteful number, since it uses less digits than its factorization.

80100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801015 (or 801008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 80100100 is about 8949.8659207834. The cubic root of 80100100 is about 431.0665788624.

Adding to 80100100 its reverse (100108), we get a palindrome (80200208).

It can be divided in two parts, 80100 and 100, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 80100100 in words is "eighty million, one hundred thousand, one hundred".