20010100404 has 72 divisors (see below), whose sum is σ = 54332117280. Its totient is φ = 5715173184.

The previous prime is 20010100403. The next prime is 20010100489. The reversal of 20010100404 is 40400101002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20010100404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010100403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2811202 + ... + 2818310.

It is an arithmetic number, because the mean of its divisors is an integer number (754612740).

Almost surely, 2^20010100404 is an apocalyptic number.

It is an amenable number.

20010100404 is an abundant number, since it is smaller than the sum of its proper divisors (34322016876).

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

20010100404 is a wasteful number, since it uses less digits than its factorization.

20010100404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11917 (or 11908 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20010100404 its reverse (40400101002), we get a palindrome (60410201406).

The spelling of 20010100404 in words is "twenty billion, ten million, one hundred thousand, four hundred four".