20303155404 has 36 divisors (see below), whose sum is σ = 58653560784. Its totient is φ = 5800901472.

The previous prime is 20303155391. The next prime is 20303155421. The reversal of 20303155404 is 40455130302.

20303155404 is a `hidden beast` number, since 203 + 0 + 3 + 1 + 55 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40283787 + ... + 40284290.

Almost surely, 2^20303155404 is an apocalyptic number.

It is an amenable number.

20303155404 is an abundant number, since it is smaller than the sum of its proper divisors (38350405380).

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

20303155404 is a wasteful number, since it uses less digits than its factorization.

20303155404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80568094 (or 80568089 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20303155404 its reverse (40455130302), we get a palindrome (60758285706).

The spelling of 20303155404 in words is "twenty billion, three hundred three million, one hundred fifty-five thousand, four hundred four".