20520101020005 has 96 divisors (see below), whose sum is σ = 37807937481600. Its totient is φ = 10275965876736.

The previous prime is 20520101019937. The next prime is 20520101020039. The reversal of 20520101020005 is 50002010102502.

20520101020005 is a `hidden beast` number, since 20 + 520 + 101 + 0 + 20 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 20520101020005 - 2²¹ = 20520098922853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20520101020005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 97768866 + ... + 97978524.

It is an arithmetic number, because the mean of its divisors is an integer number (393832682100).

Almost surely, 2^{20520101020005} is an apocalyptic number.

It is an amenable number.

20520101020005 is a deficient number, since it is larger than the sum of its proper divisors (17287836461595).

20520101020005 is a wasteful number, since it uses less digits than its factorization.

20520101020005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211763 (or 211760 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 20520101020005 its reverse (50002010102502), we get a palindrome (70522111122507).

The spelling of 20520101020005 in words is "twenty trillion, five hundred twenty billion, one hundred one million, twenty thousand, five".