20404020002 has 8 divisors (see below), whose sum is σ = 30618668736. Its totient is φ = 10197797092.

The previous prime is 20404019959. The next prime is 20404020019. The reversal of 20404020002 is 20002040402.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2100398 + ... + 2110089.

It is an arithmetic number, because the mean of its divisors is an integer number (3827333592).

Almost surely, 2^20404020002 is an apocalyptic number.

20404020002 is a deficient number, since it is larger than the sum of its proper divisors (10214648734).

20404020002 is a wasteful number, since it uses less digits than its factorization.

20404020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212912.

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20404020002 its reverse (20002040402), we get a palindrome (40406060404).

The spelling of 20404020002 in words is "twenty billion, four hundred four million, twenty thousand, two".