20003034656 has 96 divisors (see below), whose sum is σ = 43501038336. Its totient is φ = 9053510400.

The previous prime is 20003034647. The next prime is 20003034707. The reversal of 20003034656 is 65643030002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11541566 + ... + 11543298.

It is an arithmetic number, because the mean of its divisors is an integer number (453135816).

Almost surely, 2^20003034656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003034656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21750519168).

20003034656 is an abundant number, since it is smaller than the sum of its proper divisors (23498003680).

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

20003034656 is a wasteful number, since it uses less digits than its factorization.

20003034656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047 (or 2017 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 20003034656 its reverse (65643030002), we get a palindrome (85646064658).

The spelling of 20003034656 in words is "twenty billion, three million, thirty-four thousand, six hundred fifty-six".