2001135504 has 20 divisors (see below), whose sum is σ = 5169600176. Its totient is φ = 667045152.

The previous prime is 2001135427. The next prime is 2001135527. The reversal of 2001135504 is 4055311002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20845114 + ... + 20845209.

Almost surely, 2^2001135504 is an apocalyptic number.

2001135504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2001135504 is an abundant number, since it is smaller than the sum of its proper divisors (3168464672).

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

2001135504 is a wasteful number, since it uses less digits than its factorization.

2001135504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41690334 (or 41690328 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2001135504 is about 44734.0530692223. The cubic root of 2001135504 is about 1260.1594456826.

Adding to 2001135504 its reverse (4055311002), we get a palindrome (6056446506).

The spelling of 2001135504 in words is "two billion, one million, one hundred thirty-five thousand, five hundred four".