20404440402 has 8 divisors (see below), whose sum is σ = 40808880816. Its totient is φ = 6801480132.

The previous prime is 20404440401. The next prime is 20404440449.

20404440402 is nontrivially palindromic in base 10.

20404440402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

20404440402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20404440401) 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, 1700370028 + ... + 1700370039.

It is an arithmetic number, because the mean of its divisors is an integer number (5101110102).

Almost surely, 2^20404440402 is an apocalyptic number.

20404440402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20404440402 is a wasteful number, since it uses less digits than its factorization.

20404440402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400740072.

The product of its (nonzero) digits is 4096, while the sum is 24.

The spelling of 20404440402 in words is "twenty billion, four hundred four million, four hundred forty thousand, four hundred two".