20505330411004 has 12 divisors (see below), whose sum is σ = 36219695773464. Its totient is φ = 10156845904304.

The previous prime is 20505330410941. The next prime is 20505330411043. The reversal of 20505330411004 is 40011403350502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23954824819 + ... + 23954825674.

It is an arithmetic number, because the mean of its divisors is an integer number (3018307981122).

Almost surely, 2^{20505330411004} is an apocalyptic number.

It is an amenable number.

20505330411004 is a deficient number, since it is larger than the sum of its proper divisors (15714365362460).

20505330411004 is a wasteful number, since it uses less digits than its factorization.

20505330411004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47909650604 (or 47909650602 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20505330411004 its reverse (40011403350502), we get a palindrome (60516733761506).

The spelling of 20505330411004 in words is "twenty trillion, five hundred five billion, three hundred thirty million, four hundred eleven thousand, four".