20011232004 has 12 divisors (see below), whose sum is σ = 46692874704. Its totient is φ = 6670410664.

The previous prime is 20011231969. The next prime is 20011232029. The reversal of 20011232004 is 40023211002.

It is a tau number, because it is divible by the number of its divisors (12).

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, 833801322 + ... + 833801345.

It is an arithmetic number, because the mean of its divisors is an integer number (3891072892).

Almost surely, 2^20011232004 is an apocalyptic number.

It is an amenable number.

20011232004 is an abundant number, since it is smaller than the sum of its proper divisors (26681642700).

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

20011232004 is a wasteful number, since it uses less digits than its factorization.

20011232004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667602674 (or 1667602672 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20011232004 its reverse (40023211002), we get a palindrome (60034443006).

The spelling of 20011232004 in words is "twenty billion, eleven million, two hundred thirty-two thousand, four".