20020135504 has 20 divisors (see below), whose sum is σ = 38983938400. Its totient is φ = 9959764320.

The previous prime is 20020135439. The next prime is 20020135519. The reversal of 20020135504 is 40553102002.

It is a congruent number.

It is an unprimeable number.

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, 3140682 + ... + 3147049.

It is an arithmetic number, because the mean of its divisors is an integer number (1949196920).

Almost surely, 2^20020135504 is an apocalyptic number.

It is an amenable number.

20020135504 is a deficient number, since it is larger than the sum of its proper divisors (18963802896).

20020135504 is a wasteful number, since it uses less digits than its factorization.

20020135504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287938 (or 6287932 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20020135504 its reverse (40553102002), we get a palindrome (60573237506).

The spelling of 20020135504 in words is "twenty billion, twenty million, one hundred thirty-five thousand, five hundred four".