20081000404 has 6 divisors (see below), whose sum is σ = 35141750714. Its totient is φ = 10040500200.

The previous prime is 20081000393. The next prime is 20081000437. The reversal of 20081000404 is 40400018002.

It can be written as a sum of positive squares in only one way, i.e., 12633310404 + 7447690000 = 112398^2 + 86300^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510125047 + ... + 2510125054.

Almost surely, 2^20081000404 is an apocalyptic number.

It is an amenable number.

20081000404 is a deficient number, since it is larger than the sum of its proper divisors (15060750310).

20081000404 is a wasteful number, since it uses less digits than its factorization.

20081000404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020250105 (or 5020250103 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20081000404 its reverse (40400018002), we get a palindrome (60481018406).

The spelling of 20081000404 in words is "twenty billion, eighty-one million, four hundred four", and thus it is an aban number.