80641100 has 36 divisors (see below), whose sum is σ = 175514808. Its totient is φ = 32160000.

The previous prime is 80641079. The next prime is 80641103. The reversal of 80641100 is 114608.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (80641103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39095 + ... + 41105.

Almost surely, 2^80641100 is an apocalyptic number.

It is an amenable number.

80641100 is an abundant number, since it is smaller than the sum of its proper divisors (94873708).

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

80641100 is a wasteful number, since it uses less digits than its factorization.

80641100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 80641100 is about 8980.0389754165. The cubic root of 80641100 is about 432.0348837286.

Adding to 80641100 its reverse (114608), we get a palindrome (80755708).

The spelling of 80641100 in words is "eighty million, six hundred forty-one thousand, one hundred".